Chemical Reactions

Atoms and molecules are all around us and so are chemical reactions.

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A ____________ Is the process of breaking chemical bonds in one or more substances, and the reforming on newborns to create new substances.

• physical change

• chemical change

• energy

• law of conservation of mass

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

An expression of a chemical reaction using chemical formulas and symbols.

• algebraic equation

• order of operation

• chemical equation

• formula

Tags

NGSS.MS-PS1-1

All chemical reactions involve energy.

• True

• False

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A process by which plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water to make glucose and oxygen as a byproduct.

• activation energy

• chemosynthesis

• equilibrium

• photosynthesis

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Describes a chemical reaction that uses more energy than it releases.

Energy used > Energy released

• activation energy

• exothermic

• endothermic

• none of the above

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Describes a chemical reaction that releases more energy than it uses.

Energy released > Energy used

• activation energy

• exothermic

• endothermic

• equilibrium

Tags

NGSS.HS-PS1-4

The left side of the equation are the

• reactants: carbon dioxide + glucose + Energy

• products: glucose + oxygen

• reactants: carbon dioxide + water + Energy

• products: Energy + glucose + oxygen

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

All life on earth depends on energy from

• animals

• water

• sun

• chemical

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

A molecule added to a chemical reaction that increases the reaction rate without getting used up in the process.

• kinetic molecular

• catalyst

• reaction rate

• inhibitor