Useful Science Clipart and Diagrams

Lab equipment, safety signs, experiments, and more

Chemistry clipart

PCH-Vector / Getty Images
Science
Science
By
Anne Marie Helmenstine, Ph.D.
Anne Marie Helmenstine, Ph.D.
Chemistry Expert
  • Ph.D., Biomedical Sciences, University of Tennessee at Knoxville
  • B.A., Physics and Mathematics, Hastings College
Dr. Helmenstine holds a Ph.D. in biomedical sciences and is a science writer, educator, and consultant. She has taught science courses at the high school, college, and graduate levels.
Learn about our Editorial Process
Updated on November 05, 2019

This is a collection of science clipart and diagrams. Some of the science clipart images are public domain and can be used freely, while others are available for viewing and download, but cannot be posted elsewhere online. I've noted the copyright status and image owner.

Bohr Model of the Atom

The Bohr Model of the atom is a planetary model in which the electrons orbit around the nucleus.
The Bohr Model of the atom is a planetary model in which the electrons orbit around the atomic nucleus. JabberWok, Wikipedia Commons

 The Bohr model depicts an atom as a small, positive-charged nucleus orbited by negative-charged electrons. It is also known as the Rutherford-Bohr model.

Atom Diagram

This is a basic diagram of an atom, with protons, neutrons and electrons labeled.
This is a basic diagram of an atom, with protons, neutrons and electrons labeled. AhmadSherif, Wikipedia Commons

An atom consists of a proton, at a minimum, which defines its element. Atoms contain protons and neutrons in their nucleus. Electrons orbit the nucleus.

Cathode Diagram

This is a diagram of a copper cathode in a galvanic cell.
This is a diagram of a copper cathode in a galvanic cell. MichelJullian, Wikipedia Commons

The two types of electrodes are the anode and cathode. The cathode is the electrode from which current departs.

Precipitation

This diagram illustrates the process of chemical precipitation.
This diagram illustrates the process of chemical precipitation. ZabMilenko, Wikipedia

Precipitation occurs when two soluble reactants form an insoluble salt, called a precipitate.

Boyle's Law Illustration

Boyle's Law describes the relationship between pressure and volume of a gas when mass and temperature are held constant. NASA's Glenn Research Center

To see the animation, click the image to view it full-size. Boyle's law states the volume of a gas is inversely proportional to its pressure, assuming temperature remains constant.

Charles's Law Illustration

This animation illustrates the relationship between temperature and volume when mass and pressure are held constant, which is Charles's Law. NASA's Glenn Research Center

Click the image to view it full-size and see the animation. Charles' law states the volume of an ideal gas is directly proportional to its absolute temperature, assuming pressure remains constant.

Battery

This is a diagram of a galvanic Daniell cell, one type of electrochemical cell or battery.

Electrochemical Cell

pH Scale

This diagram of the pH scale shows the pH values of several common chemicals. Todd Helmenstine

pH is a measure of how acidic of basic an aqueous solution is.

Binding Energy & Atomic Number

This graph shows the relationship between the electron binding energy and atomic number.
This graph shows the relationship between the electron binding energy, an element's atomic number, and an element's electron configuration. As you move left to right within a period, the ionization energy of an element generally increases. Bvcrist, Creative Commons License

Binding energy is the energy needed to separate an electron from the nucleus of an atom.

Ionization Energy Graph

This is a graph of ionization energy versus element atomic number.
This is a graph of ionization energy versus element atomic number. This graph displays the periodic trend of ionization energy. RJHall, Wikipedia Commons

Catalysis Energy Diagram

A catalyst permits a different energy pathway for a chemical reaction.
A catalyst permits a different energy pathway for a chemical reaction which has a lower activation energy. The catalyst is not consumed in the chemical reaction. Smokefoot, Wikipedia Commons

Steel Phase Diagram

This is an iron-carbon phase diagram for carbon steel.
This is an iron-carbon phase diagram for carbon steel which shows the condition under which the phases are stable. Christophe Dang Ngoc Chan, Creative Commons

Electronegativity Periodicity

This graph illustrates how Pauling electronegativity is related to element group and element period.
This graph illustrates how Pauling electronegativity is related to element group and element period. Physchim62, Wikipedia Commons

In general, electronegativity increases as you move from left to right along a period, and decreases as you move down an element group.

Vector Diagram

This is a vector that goes from A to B.
This is a vector that goes from A to B. Silly rabbit, Wikipedia Commons

Rod of Asclepius

The Rod of Asclepius is an ancient Greek symbol associated with healing.
The Rod of Asclepius is an ancient Greek symbol associated with healing. According to Greek mythology, Asclepius (a son of Apollo) was a skilled medical practitioner. Ddcfnc, wikipedia.org

Celsius/Fahrenheit Thermometer

This thermometer is labelled with both Fahrenheit and Celsius degrees.
This thermometer is labelled with both Fahrenheit and Celsius degrees so that you can compare the Fahrenheit and Celsius temperature scales. Cjp24, Wikipedia Commons

Redox Half Reactions Diagram

This is a diagram that describes the half-reactions of a redox reaction.
This is a diagram that describes the half-reactions of a redox reaction or oxidation-reduction reaction. Cameron Garnham, Creative Commons License

Redox Reaction Example

Here is a diagram of a sample redox reaction.
The reaction between hydrogen gas and fluorine gas to form hydrofluoric acid is an example of a redox reaction or oxidation-reduction reaction. Bensaccount, Creative Commons License

Hydrogen Emission Spectrum

The four visible lines of the Balmer Series can be seen in the hydrogen emission spectrum.
The four visible lines of the Balmer Series can be seen in the hydrogen emission spectrum. Merikanto, Wikipedia Commons

Solid Rocket Motor

Solid rockets can be extremely simple. This is a diagram of a solid rocket motor.
Solid rockets can be extremely simple. This is a diagram of a solid rocket motor, illustrating typical elements of construction. Pbroks13, Free Documentation License

Linear Equation Graph

This is a graph of a pair of linear equations or linear functions.
This is a graph of a pair of linear equations or linear functions. HiTe, public domain

Photosynthesis Diagram

This is a generalized diagram of the process of photosynthsis.
This is a generalized diagram of the process of photosynthsis through which plants convert solar energy into chemical energy. Daniel Mayer, Free Documentation License

Salt Bridge

This is a diagram of an electrochemical cell with a salt bridge.
This is a diagram of an electrochemical cell with a salt bridge made using potassium nitrate in a glass tube. Cmx, Free Documentation License

A salt bridge is a means of connecting the oxidation and reduction half-cells of a galvanic cell (voltaic cell), which is a type of electrochemical cell.

The most common type of salt bridge is a U-shaped glass tube, which is filled with an electrolyte solution. The electrolyte may be contained by agar or gelatin to prevent intermixing of the solutions. Another way to make a salt bridge is to soak a piece of filter paper with an electrolyte and place ends of the filter paper in each side of the half-cell. Other sources of mobile ions work too, such as two fingers of a human hand with one finger in each half-cell solution.

pH Scale of Common Chemicals

This scale lists the pH values for common chemicals.
This scale lists the pH values for common chemicals. Edward Stevens, Creative Commons License

Osmosis - Blood Cells

The effect of osmotic pressure on red blood cells in shown.
The Effect of Osmotic Pressure on Red Blood Cells The effect of osmotic pressure on red blood cells in shown. From left to right, the effect is depicted of a hypertonic, isotonic and hypotonic solution on red blood cells. LadyofHats, Public Domain

Hypertonic Solution or Hypertonicicty

Isotonic Solution or Isotonicity

Hypotonic Solution or Hypotonicity

When the solution outside of the red blood cells has a lower osmotic pressure than the cytoplasm of the red blood cells, the solution is hypotonic with respect to the cells. The cells take in water in an attempt to equalize the osmotic pressure, causing them to swell and potentially burst.

Steam Distillation Apparatus

Steam distillation is used to separate two liquids that have different boiling points.
Steam distillation is used to separate two liquids that have different boiling points. Joanna Kośmider, public domain

Steam distillation is particularly useful for the separation of heat-sensitive organics that would be destroyed by direct heat.

Calvin Cycle

This is a diagram of the Calvin Cycle.
This is a diagram of the Calvin Cycle, which is the set of chemical reactions that occur without light (dark reactions) in photosynthesis. Mike Jones, Creative Commons License

The Calvin Cycle is also known as the C3 cycle, Calvin-Benson-Bassham (CBB) cycle or reductive pentose phosphate cycle. It is a set of light-independent reactions for carbon fixation. Because no light is needed, these reactions are collectively known as 'dark reactions' in photosynthesis.

Octet Rule Example

This is an example of the octet rule, using carbon dioxide.
This is the Lewis structure of carbon dioxide, illustrating the octet rule. Ben Mills

This Lewis structure depicts the bonding in carbon dioxide (CO2). In this example, all atoms are surrounded by 8 electrons, thus fulfilling the octet rule.

Leidenfrost Effect Diagram

This is a diagram of the Leidenfrost effect.
In the Leidenfrost effect, a droplet of liquid is separated from a hot surface by a protective layer of vapor. Vystrix Nexoth, Creative Commons License

This is a diagram of the Leidenfrost effect.

Nuclear Fusion Diagram

This is a diagram of the fusion reaction between deuterium and tritium.
Deuterium - Tritium Fusion This is a diagram of the fusion reaction between deuterium and tritium. Deuterium and tritium accelerate toward each other and fuse to form an unstable He-5 nucleus which ejects a neutron to become a He-4 nucleus. Considerable kinetic energy is produced. Panoptik, Creative Commons License

Nuclear Fission Diagram

This is a simple diagram illustrating an example of nuclear fission.
This is a simple diagram illustrating an example of nuclear fission. A U-235 nucleus captures and absorbs a neutron, turning the nucleus into a U-236 atom. The U-236 atom experiences fission into Ba-141, Kr-92, three neutrons, and energy. Fastfission, public domain
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Helmenstine, Anne Marie, Ph.D. "Useful Science Clipart and Diagrams." ThoughtCo, Jun. 25, 2024, thoughtco.com/useful-science-clipart-and-diagrams-4071317. Helmenstine, Anne Marie, Ph.D. (2024, June 25). Useful Science Clipart and Diagrams. Retrieved from https://www.thoughtco.com/useful-science-clipart-and-diagrams-4071317 Helmenstine, Anne Marie, Ph.D. "Useful Science Clipart and Diagrams." ThoughtCo. https://www.thoughtco.com/useful-science-clipart-and-diagrams-4071317 (accessed April 10, 2025).