CHEMISTRY TEST 2024

What element is...C

• calcium
• carbon
• oxygen
• helium

What element is...

Ag

• gold
• silicon
• cadmium
• silver

Only nonmetal in group 1

• Hydrogen

• Lithium

• Chlorine

• Potassium

The only noble gas that does not have 8 valence electrons

• helium

• argon

• neon

• radon

How many protons are in one carbon atom?

• 1

• 6

• 12.01

• 12

How many protons are in Beryllium?

• 4

• 9

• 5

• 2

What is the atomic mass of Copper?

• 63.546

• 29

• 29.546

• 92

Covalent bonds are between...

• a metal and a nonmetal

• a nonmetal and another nonmetal

• a metal and another metal

• any types of elements

Atoms are most stable when their outer electron level is complete.

• true

• false

How are covalent bonds formed?

• by atoms sharing some of their electrons

• by electron transfer from one atom to another

• by atoms exchanging electrons

• by atoms hanging out together