Late Nite Labs is the largest resource of interactive, open ended online science labs. Sign up and gain access to our complete library of labs, allowing you to pick and choose the labs that work with your curriculum. Each lab comes complete with background information, procedures, and lab manual, making using our labs quick and easy. Experiment with our interactive labs to see for yourself!

Acids, Bases and pH Buffers

Learning objectives: Explain the relationship between acids, bases, and conjugate acids and bases. Measure and compare the pH of substances using multiple methods. Graph experimental data to find curves.

Bacteria

Learning objectives: Stain bacteria to determine if they are gram+ or gram-. Determine the antibiotic sensitivity of gram+ and gram- bacteria.

Biological Molecules

Learning Objectives: Describe the role of macromolecules in living organisms and their food sources. Determine the presence of macromolecules through experimentation. Compare testing methods for macromolecules.

Biology PCR

Students practice modern molecular genetic techniques used for bacterial identification. Learning Objectives: Explain methods for manipulating and studying DNA. Describe the requirements and results of polymerase chain reaction. Describe the requirements and results of electrophoresis.

Cell Structure and Function

Learning objectives: Describe the structure and function of eukaryotic and prokaryotic cells. Describe the relationship between structure and function. Investigate the diversity of cell structures with microscopy.

Cellular Respiration

Learning Objectives: Compare aerobic and anaerobic respiration. Describe the process of alcohol fermentation. Explain factors that affect cellular processes.

Diffusion and Osmosis

Learning objectives: Explain the roles of diffusion and osmosis in cell transport. Demonstrate the effects of factors such as concentration and size on osmosis and diffusion. Compare cells in solutions of various tonicity.

DNA

Learning objectives: Describe the structure and function of DNA. Compare DNA samples for familial and nonfamilial similarities. Use electrophoresis to study DNA. Keywords: gel electrophoresis, DNA profiling (DNA fingerprinting), PCR, restriction enzymes, variable number tandem repeats (VNTRs)

Earthworm

Learning objectives: Relate anatomical structure to function. Understand anatomical orientation. Observe and label anatomical features.

Ecology

Learning objectives: Introduce students to population estimates and to population fluctuations related to changes in the environment.

Enzymes

Learning objectives: Explore enzymatic activity.

Evolution

Learning objectives: Study the relationships of related species. Explore features and characteristics that have evolved over time. Investigate the relationship between an organism's environment and its ability to thrive in that environment.

Expanded Diffusion and Osmosis

Learning Objectives: Explain the roles of diffusion and osmosis in cell transport. Demonstrate the effects of factors such as concentration and size on osmosis and diffusion. Explore the rates of diffusion and osmosis.

Fungi

Learning objectives: Examine examples of kingdom Fungi, with emphasis on variations in structures and reproduction.

Genetics of Corn

Learning objectives: Explain Mendelian genetics. Use experimental data to investigate Mendelian genetics. Use statistical methods to confirm results of an experiment.

Introduction to Virtual Biology Labs

Learning objectives: Introduce students to the LNL platform.

Mammalian Tissue

Learn classification system for mammalian tissues and the structure and function of each tissue type.

Mitosis and Meiosis

Learning objectives: Explain the process of mitosis. Observe cells during mitosis. Explain the process of meiosis.

Photosynthesis

Practice modern molecular genetic techniques used for bacterial identification.

Plant Reproduction

Learning objectives: Observe seed plant reproduction.

Plant Structure and Function

Learning objectives: Distinguish between monocots and eudicots. Understand the functions of tissues and cells in plants. Identify characteristics of roots, stems, and leaves.

Protists

Learn about Eukaryotic supergroups through examination of representative members.

Quantitative Analysis of Enzyme Activity

Learning Objectives: Describe the function of enzymes. Explore the effects of environmental factors on enzymes. Use spectrophotometry to explore the concentration of substances.

Scientific Method

Learning objectives: Use scientific methods to investigate a phenomenon. Evaluate investigation techniques.

Alka Seltzer Strength

Learning objectives: Explain how the Law of Conservation of Mass and stoichiometry can be used to quantify the amount of a substance. Determine the substances that are limiting or excess in a reaction. Use experimental data to determine the amount of a substance in a mixture.

Analysis of Hydrogen Peroxide Solutions

Learning Objectives: Explain and balance an oxidation─reduction reaction. Use titration to determine the amount of a substance in a solution. Perform a redox titration.

Avogadro's Law

Learning objectives: Explain the relationship between volume and the number of molecules of an ideal gas. Confirm Avogadro's Law with experimental data. Determine the molar volume of a gas.

Boyle's Law

Learning objectives: Explain the relationship between the volume and the pressure of an ideal gas. Confirm Boyle's Law using experimental data. Use Boyle's Law to determine pressure or volume of a gas.

Characteristic Properties: Melting and Boiling Points

Learning objectives: Explain how characteristic properties can be used to identify substances. Use experimental data to identify substances based on their characteristic properties. Measure the melting and boiling points of a substance.

Charles's Law

Learning objective: Explain the relationship between the volume and the temperature of an ideal gas. Confirm Charles's Law using experimental data. Use Charles's Law to determine temperature or volume of a gas.

Chemical Kinetics

Learning objectives: Determine the rate expression of a reaction. Use experimental data to plot data points, create a line of best fit, and extrapolate information.

Chemical Reaction Types and Their Equations

Learning objectives: Describe classes of chemical reactions. Observe chemical reactions for qualitative results. Write balanced equations for chemical reactions.

Chemistry Biological Molecules

Learning Objectives: Describe the role of macromolecules in living organisms and their food sources. Determine the presence of macromolecules through experimentation. Compare testing methods for macromolecules.

Chemistry Demo

Learning objectives: Introduce students to the LNL platform.

Chemistry Enzymes

Learning objectives: Explore enzymatic activity.

Conservation of Mass

Learning objectives: Explain the conservation of mass in chemical and physical reactions. Use experimental data to confirm a scientific law.

Decomposition of Malachite

Learning objectives: Use stoichiometry to determine the amount of a substance formed in a reaction. Use experimental data to confirm the stoichiometry of a reaction.

Density: A Characteristic Property

Learning objectives: Explain the property of density. Determine the density of a substance. Identify an unknown substance based on characteristic properties.

Determination of Absolute Zero

Learning objectives: Explain the basis of the Kelvin temperature scale. Use experimental techniques to derive absolute zero. Use graphical analysis to calculate the origin of a data set.

Empirical Formula of a Hydrate

Learning objectives: Determine the chemical formula of a hydrate from empirical data. Explain what a hydrate, anhydrate, and water of hydration are.

Empirical Formula of Copper Oxide

Learning objectives: Compare the empirical formula and molecular formula of a substance. Use experimental data to find the empirical formula of a substance.

Enthalpy Change for the Decomposition of Ammonium Chloride

Learning objectives: Use a calorimeter to collect experimental data. Determine the enthalpy change of a chemical reaction.

Flame Test

Learning objectives: Explain the movement of electrons between orbitals. Use flame test to identify substances.

Identifying Halide Ions

Learning objectives: Explain how qualitative analysis can be used to identify ions. Use qualitative analysis to determine characteristic reactions for each halide. Use experimental data to identify halide ions.

Identifying Unknown Substances From Characteristic Properties

Learning Objectives: Compare extensive and intensive properties. Identify a substance based on its properties.

Laboratory Skills

Learning Objectives: Report measurements with appropriate units, level of precision, and significant figures. Measure the volume of a substance. Measure the mass of a substance.

Limiting Reactant and Excess Reactant

Learning objectives: Students understand the concept of limiting reactants: chemical compounds which, according to the ratio of the reacting molecules, are used up first in a reaction.

Molar Mass of Magnesium

Learning objectives: Explain the concepts of moles, molar mass, and Avogadro's number. Calculate the molar mass of a substance using experimental data.

Molar Volume of an Ideal Gas

Learning objectives: Explain the relationship between the amount, volume, temperature, and pressure of gases. Use experimental data to confirm the ideal gas law. Determine the molar volume of a gas.

Mole to Mole Relationship between Cu and Ag

Learning objectives: Determine molar relationships from experimental data. Balance a chemical equation.

Molecular Mass by Freezing Point Depression

Learning Objectives: Explain freezing point depression. Measure the freezing point of a solution. Use freezing point depression to calculate molality, van 't Hoff factors, molar mass, and to identify an unknown substance.

Oxidation States of Manganese

Learning objectives: Use oxidation states to explain the properties of atoms in a compound. Explain how atoms in a compound gain or lose electrons. Demonstrate how atoms in a compound gain or lose electrons.

Oxidation-Reduction Titration

Learning objectives: Describe and balance a redox reaction. Perform a titration. Use experimental data and stoichiometry to calculate molarity, percentages, and other results.

pH Indicators

Learning Objectives: Explain the role of pH indicators. Determine a range of pH using indicators. Calculate the pH of a solution.

Precipitation Titration of Cobalt Chloride

Learning objectives: Explain precipitation titrations. Perform a precipitation titration. Determine the unknown concentration of a solution.

Qualitative Analysis of Group I Cations

Learning objectives: Explain how qualitative analysis can be used to identify ions. Use experimental data to identify group I cations.

Quantitative Determination of Food Dyes in Powdered Drink Mixes

Learning objectives: Explain how spectrophotometry and Beer's Law can be used to determine the concentration of a solution. Use a spectrophotometer to measure absorbance. Use spectrophotometric data and Beer's Law to determine the unknown concentration of a substance in a solution.

Radiation

Learning objectives: Explain the common types of radiation produced in nuclear decay reactions. Use experimental data to determine the amount of radiation emitted by a sample.

Sample Lab

Learning objectives: Master use of the virtual laboratory.

Separating a Mixture of Compounds

Learning Objectives: Describe the properties of mixtures. Compare methods for separating mixtures. Use separation techniques to separate mixtures and determine the mass percent of each component.

Spectrophotometric Analysis of Copper

Learning objectives: Explain how spectrophotometry and Beer's Law can be used to determine the concentration of a solution. Use a spectrophotometer to measure absorbance. Use spectrophotometric data and Beer's Law to determine the unknown concentration of a solution.

Standardization of an NaOH Solution

Learning Objectives: Prepare a solution of known concentration. Determine the concentration of a solution. Perform a standardization titration.

Stoichiometry by Loss of CO2

Learning objectives: Explain how the Law of Conservation of Mass and stoichiometry can be used to calculate the amount of a substance. Determine the substances that are limiting or excess in a reaction. Use experimental data to determine stoichiometric ratios and the amount of a substance produced in a reaction.

Stoichiometry of a Gas-Forming Reaction

Learning objectives: Explain how to determine the stoichiometry of a gas forming reaction. Use experimental data to calculate the amount of product formed in a reaction. Use experimental data to determine the stoichiometry of a reaction.

Stoichiometry of an Acid-Base Reaction

Learning objectives: Describe a neutralization reaction with a balanced reaction. Demonstrate a neutralization reaction. Use gravimetric analysis to show the results of a chemical reaction.

Synthesis of Aspirin

Learning objectives: Explore synthesis reactions and the purity of their products.

The Apparent Molecular Weight of Air

Learning objectives: Explain the ideal gas law and how it can be used to determine the molar mass of a gas. Use experimental data to confirm air behaves as an ideal gas. Use experimental data to determine the molar mass of air.

The Enthalpy Change of a Chemical Reaction

Learning objectives: Determine the change in enthalpy of a chemical reaction. Use calorimetry to collect data. Determine the heat of reaction and heat of solution.

The Law of Definite Proportions

Learning Objectives: Explain the Law of Definite Proportions. Use experimental data to confirm the Law of Definite Proportions. Calculate the mass percent of an element in a compound.

The Temperature Dependence of Salt Solubility

Learning Objectives: Explain solvents, solutes, and solubility. Describe the factors that affect solubility. Use experimental data to determine solubility.

Titration of Strong and Weak Acids

Learning Objectives: Describe strong and weak acids. Calculate the concentration of an acid solution from titration data. Plot and use titration curves to determine equivalence volume, pKa, and Ka.

Titration Tutorial

Learning objectives: Titrate a solution of unknown concentration with solution of known concentration. Calculate the concentration of a solution.

Vitamin C Content of Juices

Learning objectives: Explain and balance an oxidation-reduction reaction. Use titration to determine the unknown concentration of a substance.

Volume of Air as a Function of Temperature

Learning objectives: Explain how changing conditions of a gas affects other conditions. Demonstrate Charles's Law. Conduct error analysis for experimental data.

Antibiotic Sensitivity

Learning objectives: Explain how antibiotics work. Use a sensitivity test to determine the susceptibility of bacteria to different substances. Compare the efficacy of antibiotic substances.

Bacterial Transformation

Learning objectives: Perform bacterial transformation, observing how specialized bacterial cells pick up DNA from the environment.

Basic Microscopy

Learning objectives: Describe the structures found in prokaryotic and eukaryotic cells. Use a microscope to observe cells. Compare and contrast prokaryotic and eukaryotic cells.

Biochemical Characterization

Learning objectives: Perform biochemical tests to differentiate between bacterial species.

Control of Bacterial Growth

Learning objectives: Explain the effects of controlling bacterial growth. Describe methods of controlling bacterial growth.

Cultivation of Bacteria

Learning objectives: Compare types of bacteria. Compare methods of isolating bacteria. Describe the results of bacterial growth.

Expanded Extreme Bacteria

Learning Objectives: Explain the roles of diffusion and osmosis in cell transport. Demonstrate the effects of factors such as concentration and size on osmosis and diffusion. Explore the rates of diffusion and osmosis.

Extreme Bacteria

Learning objectives: Identify environmental factors that may impact the types and success of bacteria. Demonstrate how environmental factors affect the growth of bacteria. Compare species of bacteria.

PCR of 16s rRNA Gene

Learning objectives: Explain methods for manipulating and studying DNA. Describe the requirements and results of polymerase chain reaction. Describe the requirements and results of electrophoresis.

Staining

Learning objectives: Identify unknown bacterial samples.

Unknown Identification

Understand concept of pH and the role of buffers in pH fluctuations solutions.

Buoyancy

Learning Objectives: Explain the relationship between buoyancy, density, and mass. Explain/Observe the concept of apparent mass/weight. Calculate buoyant force and related quantities (density, volume) from static equilibrium.

Centripetal Force

Learning Objectives: Explain centripetal force. Observe and explain the relationships between force, mass, radius, and velocity of an object moving in uniform circular motion.

Conservation of Energy

Learning objectives: Explain the Law of Conservation of Energy. Demonstrate how energy is conserved. Calculate the mechanical energy.

Conservation of Momentum

Learning objectives: Explain the Law of Conservation of Momentum. Demonstrate how momentum is conserved. Compare elastic and inelastic collisions.

Error Analysis

Learning objectives: Investigate sources of experimental error. Calculate standard deviation. Analyze the error in a set of measurements.

Free Falling Bodies

Learning objectives: Explain gravity and its effects. Demonstrate acceleration due to gravity. Calculate the force of gravity on an object.

Hooke's Law

Learning objectives: Relate the extension or compression of a spring to the force(s) acting on it. Relate the oscillation rate of a spring system to its mass and spring constant. Determine the spring constant of a system from plotted data.

Newton's Second Law

Learning objectives: Explain Newton's Laws. Demonstrate the relationship of force, mass, and acceleration through Newton's Second Law.

Standing Waves

Learning objectives: Calculate wavelengths, frequencies, and wave speeds. Recognize and describe standing waves. Relate the physical attributes of an oscillating system to the properties of the waves it produces.

Torque

Learning objectives: Observe the relationship between force and torque in levers, wheels, and axle systems. Manipulate equations to calculate force and torque. Explain the mechanical advantage of systems.

Two-Dimensional Kinematics

Learning objectives: Describe the horizontal and vertical motion of a projectile launched at an angle. Calculate the launch velocity, maximum height, and range of a projectile.