23-24 Atoms Quiz

Which part of the atom contains negatively charged particles?

• Nucleus

• Electron orbit

• Protons

• Neutrons

What is a physical change?

• A change that alters the chemical composition of a substance

• A change where a new substance is formed

• A change that affects the form of a chemical substance, but not its chemical composition

• A change that can only be observed through chemical reactions

How many protons are there in an atom of Carbon?

• 6

• 12

• 14

• 8

What is a chemical change?

• A change that can be reversed by changing the temperature

• A change that affects the physical appearance only

• A change that results in the formation of one or more new substances

• A change that occurs when a substance dissolves in water

How many electrons are in a neutral atom of Helium?

• 2

• 4

• 6

• 8

What information does the atomic number of an element provide?

• The number of neutrons

• The number of protons

• The total number of protons and neutrons

• The number of electrons in a charged atom

• 1

• 2

• 3

• 4

Which of the following is NOT a part of an atom?

• Proton

• Neutron

• Electron

• Photon

Which of the following is a physical property?

• Reactivity with acid

• Flammability

• Melting point

• Ability to rust

How do you determine the number of neutrons in an atom?

• Subtract the atomic number from the atomic mass

• Add the number of protons and electrons

• Subtract the number of electrons from the atomic mass

• Add the atomic number to the number of electrons