Chemistry

The smallest unit of matter that retains the properties of that matter is

• a molecule
• a compound
• a mixture
• an atom

Tags

NGSS.MS-PS1-1

What is a reactant?

• The starting substance
• The ending substance

Tags

NGSS.MS-PS1-1

What is a product?

• The starting substance
• The ending substance

Tags

NGSS.MS-PS1-1

The compounds and elements that are present at the beginning of a reaction:

• reactants
• catalyst
• products
• energy 

Tags

NGSS.MS-PS1-1

The compounds or elements present at the end of a reaction 

• reactants
• catalyst
• products
• energy 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What kind of change is a phase change?

• Physical - it's still the same substance
• chemical - it's made of chemicals 

Tags

NGSS.MS-PS1-4

Which of the following are NOT signs that a chemical reaction occured?

• the properties changed
• bubbles of gas formed
• color stays the same
• smells different

Tags

NGSS.MS-PS1-2

which compound is made up of carbons and hydrogen

• hydrocarbons

• aldehytes

• condensed structure

• alcohols

Burning is always a chemical reaction.

• True
• false

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

name the group that has a single bond

• alkenes

• alcohols

• alkanes

• ethers