Mixing Substances

Which of the following is an example of a mixture?

• Lemonade

• Rocks in a fish tank

• Freshly baked cookies

• Hot Chocolate

Which statement below is true?

• Trail mix is a mixture because the original components cannot be separated

• Gatorade is a mixture because the original components can be separated

• Trail mix is a mixture because the original components can be separated

• None of the statements are true

• Substances can be combined. When they are combined they either form a physical or chemical change/reaction.

• true

• false

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Substance

• Matter with the same composition and properties throughout. This is also defined as a compound.

• A combination of two or more substances where each substance retains its original properties; they are not chemically bound together.

• A process in which one or more substances combine to form one or more new substances.

• A change in the shape or appearance of an object, but a new substance does not form.

Tags

NGSS.MS-PS1-5

Mixture

• Matter with the same composition and properties throughout. This is also defined as a compound. 

• A combination of two or more substances where each substance retains its original properties; they are not chemically bound together.

• A process in which one or more substances combine to form one or more new substances.

• A change in the shape or appearance of an object, but a new substance does not form.

Chemical reaction (/change)

• Matter with the same composition and properties throughout. This is also defined as a compound.

• A combination of two or more substances where each substance retains its original properties; they are not chemically bound together.

• A process in which one or more substances combine to form one or more new substances.

• A change in the shape or appearance of an object, but a new substance does not form.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Physical reaction (/change)

• Matter with the same composition and properties throughout. This is also defined as a compound

• A combination of two or more substances where each substance retains its original properties; they are not chemically bound together

• A process in which one or more substances combine to form one or more new substances

• A change in the shape or appearance of an object, but a new substance does not form

Tags

NGSS.MS-PS1-2

A mixture is two or more substances combined together, but substances retain their original properties (no chemical reaction occurs).

• true

• false

A mixture cannot be easily separated back into its original components, i.e. it is a reversible change.

• true

• false

• A chemical reaction occurs when two substances combine to form one or more new substances.

• true

• false

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5