Chemistry Unit Review

Which subatomic particle has a positive charge?

• proton

• neutron

• electron

• midichlorian

Which subatomic particle has a negative charge?

• proton

• neutron

• electron

• cybertron

What is the center of an atom called?

• The headquarters

• The centrometer

• The hypothesis

• The nucleus

Tags

NGSS.MS-PS1-1

Typically in an atom, which two subatomic particles are equal in number?

• protons and neutrons

• all subatomic particles are equal in number

• neutrons and electrons

• protons and electrons

Tags

NGSS.MS-PS1-1

^{What does the 6 represent above the C}

• Symbol 
• Name 
• Mass Number 
• Atomic Number 

Tags

NGSS.MS-PS1-1

The nucleus of an atom contains which subatomic particles?

• protons and electrons

• protons and neutrons

• electrons and neutrons

• protons, electrons, and neutrons

Which change describes a substance that changes shape, form, or appearance but is still the same substance?

• physical change

• chemical change

Tags

NGSS.MS-PS1-4

What happens when a new substance is produced during a reaction?

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Melting ice

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

Burning wood

• physical change

• chemical change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5