Chapter 1 Chemi

Magnesium reacts with hydrochloric acid to produce magnesium chloride and hydrogen gas. The reactants in this reactions are

• magnesium and magnesium chloride.

• hydrochloric acid and hydrogen gas.

• magnesium and hydrochloric acid.

• magnesium chloride and hydrogen gas.

Tags

NGSS.MS-PS1-2

Matter that has a definite shape and a definite volume is

• a liquid.

• a element.

• a solid.

• a gas.

Tags

NGSS.MS-PS1-4

We know that air is a mixture and not a compound because

• it can be heated to a higher temperature.

• it can be compressed to a smaller volume.

• it is colorless.

• its composition can vary.

Matter can be defined as anything that

• has weight.

• has mass and volume.

• is uniform throughout.

• exhibits both chemical and physical properties.

Tags

NGSS.MS-PS1-5

Which of the following is best classified as a homogeneous mixture?

• pizza

• blood

• hot tea

• copper wire

A compound differs from a mixture in that a compound

• contains only one element.

• varies in chemical compostion depending on the sample size

• has a definite composition the elements that the compound contains.

• can be classified as either heterogenous or homogenous.

Which of the following is not a physical state of matter?

• solid

• gas

• element

• liquid

Three of the following must contain two more kinds of atoms. Which one does not contain two or more kinds of atoms?

• element

• compound

• homogeneous mixture

• heterogenous mixture

Which of the following symbols does not match the element name given/

• Al, aluminum

• Co, copper

• K, potassium

• P, phosphorus