Chemistry NCFE Review

What 2 elements make up water?

• Hydrogen and Carbon

• Carbon and Oxygen

• Hydrogen and Oxygen

• Oxygen and Helium

Tags

NGSS.MS-PS1-1

How many molecules are in this formula?

• 1

• 2

• 3

• 6

The center of an atom is called

a/an __________.

• atomic mass

• nucleus

• proton center

• energy shell

How many neutrons are in an Calcium atom?

• 20

• 40.08

• 60

Tags

NGSS.MS-PS1-1

What property of water is shown in the picture?

• surface tension

• capillary action

• universal solvent

• specific heat

If the protons and electrons do not match, the atom is ____.

• neutral

• ion

Which equation shows the correct number of molecules?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

This symbol indicates a _______.

• neutron

• proton

• electron

What substance commonly exists in what 3 states of matter?

• Oxygen

• Carbon Dioxide

• Rust

• Water

Tags

NGSS.MS-PS1-4

Which image shows a Bohr model for Carbon.

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1