Compounds, Mixtures, and Solutions

A(n) (a)   is a pure substance that cannot be broken down into simpler substances by chemical reactions.

A (a)   is a combination of two or more elements.

Tags

NGSS.MS-PS1-1

A (a)   is the physical matter of which living or nonliving things are composed.

Tags

NGSS.MS-PS1-4

What is the element that contains one proton and one electron.

• oxygen

• hydrogen

• carbon

• zinc

What is an element that makes up about 21% of Earth's atmosphere?

• nickle

• carbon

• nitrogen

• oxygen

When something is not mixed with another substance we call it (a)   .

What is a combination of substances that can be physically separated from one another called?

• dissolve

• mixture

• combination

• solution

A (a)   mixture is when the parts are different shapes and colors.

A substance in which all of the parts are the same throughout is called a _____________________mixture.

• homogeneous

• heterogeneous

• chemical

• physical

A type of heterogeneous mixture in which solid parts float in the liquid or gas first and if left undisturbed, the solid will settle out of the liquid or gas.

(a)