Pure Substances and Mixtures

___________ are the smallest unit of an element that maintains the properties of that element.

• Atoms

• Elements

• Compounds

• Mixtures

A ______________ is made up of different kinds of atoms chemically combined.

• element

• compound

• mixture

• molecule

Tags

NGSS.MS-PS1-1

True or False: elements AND compounds are pure substances.

• True

• False

A ______________ mixture is one that does not have a uniform composition.

• heterogeneous

• homogenous

• pure substance

A _________________ mixture is one where the substances are evenly spread throughout.

• heterogeneous

• homogeneous

• pure substance

Coffee, mouthwash, and vinegar are examples of __________________ mixtures.

• heterogeneous

• homogeneous

• pure

Air is:

• An element

• A compound

• A mixture

• None of these

A pure substances ________ be broken down into simpler matter using physical methods.

• sometimes

• can

• can not

This is a water molecule. It is a ________.

• Element

• Compound

• Heterogenous Mixture

• Homogenous Mixture

Tags

NGSS.MS-PS1-1

A combination of two or more substances that are not chemically combined is known as a

• mixture

• molecule

• compound

• element

Tags

NGSS.MS-PS1-1