Observing Chemical Change

A change in matter that produces one or more new substances is a _______.

• chemical change

• physical change

• material change

• transformational change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Frying an egg is an example of a _______.

• physical change

• chemical change

• transformational change

• material change

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Substances that undergo a chemical change are called _______.

• materials

• products

• reactants

• alloys

Tags

NGSS.MS-PS1-2

The new substances that are formed in a chemical change are also called _______.

• reactants

• products

• materials

• chemicals

Tags

NGSS.MS-PS1-5

Chemical changes occur when existing bonds break and _______.

• the same bonds reform again

• no new bonds form

• everything disappears

• new bonds form

Tags

NGSS.MS-PS1-5

Chemical reactions involve changes in properties and _______.

• changes in shape

• changes in size

• changes in energy

• changes in taste

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

In an exothermic reaction, the energy is usually _______.

• released as heat

• released as water

• absorbed by the reactants as their bonds break.

• equally released and absorbed

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A _______ is a solid that forms from liquids during a chemical reaction.

• product

• reactant

• precipitate

• substance

Tags

NGSS.MS-PS1-2

In an endothermic reaction, more energy is required to break the bonds of the reactants than is released by the formation of the products.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A reaction that release energy in the form of heat is called a(n) _______________ reaction.

• Exothermic

• Endothermic

Tags

NGSS.MS-PS3-4