Chemical Change Indicators Quiz

Which of the following is an indicator that a chemical change has occurred?

• Change in temperature

• Change in state

• Increase in mass

• Decrease in volume

What is a sign of a chemical change involving the formation of a new substance?

• Change in shape

• Formation of a solid

• Melting

• Evaporation

Which of the following indicates a chemical change through the release of a gas?

• Presence of gas/bubbles

• Change in size

• Increase in density

• Decrease in pressure

What is an indicator of a chemical change that involves a change in appearance?

• Change in color

• Change in texture

• Change in volume

• Change in weight

Which of the following is a sensory indicator of a chemical change?

• Scent or odor

• Change in taste

• Change in sound

• Change in touch

What is the basic unit of a chemical element?

• Molecule

• Atom

• Proton

• Neutron

What are atoms made from?

• Protons, neutrons, and electrons

• Molecules and compounds

• Cells and tissues

• Ions and isotopes

What is a molecule?

• A single atom

• A group of protons

• When 2 or more atoms are bound together

• A type of electron

What is a molecule?

• A single atom

• Two or more atoms joined chemically

• A mixture of elements

• A type of compound

What defines a compound?

• A single element

• A molecule with identical atoms

• A molecule with at least two different elements

• A mixture of compounds