Chemical Reactions

The number written next to an element in the bottom corner

• subscript

• catalyst

• chemical change

• temperature

The number of substances at the beginning of a reaction

• Molecules

• Reactants

• products

• catalysts

Tags

NGSS.MS-PS1-2

What is the chemical factor that increases the rate of a chemical reaction?

• Reactant

• moles

• subscript

• catalyst

Tags

NGSS.HS-PS1-5

The change of a substance into a completely new substance

• catalyst

• chemical change

• physical change

• surface area

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Increasing the ____________ will allow the particles to move faster

• temperature

• rate

• catalyst

• subscript

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Breaking the reactant into smaller pieces is allowing for more _______________ which increases the rate of the reaction

• temperature

• surface area

• chemical changes

• sub reactants

The substances at the end of a chemical reaction

• product

• reactant

• change

• precipitate

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

How many atoms of O in CO₂

• 2

• 1

• 0

• 3

Tags

NGSS.MS-PS1-1

Changing the state of water from ice melting into water is a

• catalyst

• physical change

• chemical change

• Precipitate

Tags

NGSS.MS-PS1-4

a molecule made of 2 or more atoms

• double atom

• product

• compound

• reactants

Tags

NGSS.MS-PS1-1