8.6ABCDE Matter, Properties, & Chemical Reactions

What term describes a pure substance that cannot be broken down into a simpler substance by a chemical means?

• compound

• molecule

• element

• chemical reaction

What term describes a combination of two or more substances in which each substance retains its own chemical properties?

• element

• mixture

• compound

• adhesion

What is the difference between a homogeneous and heterogeneous mixture?

• homogeneous mixtures have a uniform composition and the same properties throughout and heterogeneous do not.

• homogeneous mixtures are not uniform and can be easily seperated.

• heterogeneous mixtures are the same properties and homogeneous are different.

• they are both a type of mixture.

Sketch a model of a heterogeneous mixture. Use a real life example if needed.

Does this model represent an element, compound, or mixture?

Tags

NGSS.MS-PS1-1

Air is a _______ type of mixture.

What term describes a representation of a chemical reaction using chemical symbols for elements and compounds?

• coefficient

• mixture

• chemical change

• chemical equation

In a chemical equations, what term is given to the elements and compounds on the right side of the equation?

• subscript

• products

• yeild

• reactants

The quantity of matter present in an object is called

• weight

• Gram

• mass

• density

What is the basic unit of all matter?

Tags

NGSS.MS-PS1-1