Chemistry Review

Which subatomic part of an atom gives it a positive charge?

• Neutron

• Proton

• Electron

• Nucleus

What is the smallest 'building block' of the elements that make up the universe?

• An atom

• An electron

• A proton

• A cell

Tags

NGSS.MS-PS1-1

An atom of carbon has 6 protons and 7 neutrons in its nucleus. If the atom is neutral, how many electrons does it have?

• 0

• 7

• 6

• 13

Tags

NGSS.HS-PS1-1

What type of bond is formed when atoms share electrons?

• Covalent

• Ionic

• Hydrogen

• Polyatomic

The electrons in the outermost energy level are called

• valence

• ions

• covalent

• farthest out

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The image shows the periodic grid for SODIUM. What is Sodium's atomic mass?

• 11

• 12

• 23

• Impossible to tell

What two elements make up water?

• Helium and oxygen
• Hydrogen and oxygen
• helium and carbon
• oxygen and carbon

Tags

NGSS.MS-PS1-1

Electrons have what charge?

• Negative
• Positive
• Neutral
   (No Charge)

Neutrons have what charge?

• Negative
• Positive
• Neutral
   (No Charge)

The image shows the periodic grid for POTASSIUM. What is Potassium's atomic number?

• 19
• 39
• 20
• Impossible to tell

Tags

NGSS.MS-PS1-1