Atoms Quiz

smallest part of an element

• molecule

• atom

• compound

• solutions

Charge of a proton

• positive +

• neutral 0

• negative -

charge of an electron

• neutral 0

• positive +

• negative -

What is the heavy center of an atom called?

• proton

• nucleus

• electron

• neutron

What two particles are found inside the nucleus?

• neutron and electron

• electron and proton

• protons only

• protons and neutrons

What is the smallest particle that moves quickly outside of the atom?

• electron

• proton

• nucleus

• neutron

The atomic number tells us how many electrons and __ an atom has.

• protons

• electrons

• neutrons

Carbon's atomic number is 6. How many electrons does it have?

• 12

• 0

• 66

• 6

How many atoms of Hydrogen are in this compound?

• 1

• 2

• 3

• 4

A pure substance that cannot be broken down into simpler substances.

• element
• compound
• molecule
• carbon dioxide