OL Matter Review

What type of mixture "settles out" on standing?

• suspension

• colloid

• solution

• Homogenous mixture

What two types of mixtures give a Tyndall Effect?

• a solution and a collois

• a solution and a suspension

• a colloid and a suspension

A pure substance that is made up of two or more atoms, and can only be separated chemically is called

• element

• mixture

• compound

• heterogenous

A mixture can be described as which of the following?

• A mixture can be separated.

• A mixture can be classified as homogenous or heterogenous.

• The parts of a mixture retain their original characteristics.

• All of the above are true.

Tyndall effect is most useful for distinguishing between what two mixtures?

• a suspension and a colloid

• a solution and a colloid

• a suspension and a solution

Which of the following is not an Extensive property?

• Nitrogen starts to boil at -195.5 °C

• The average height of a female gymnast is 1m and 55cm

• The volume of H20 in most disposable water bottles is 500 mL

• The weight of water is 0.5 kg per Liter

Which of the following is an example of a physical change?

• Salt dissolving in water

• Ice starts to melt at temperatures above 32°F (0°C)

• Iron rusting to form Iron Oxide

• Both Answer Choice 1 and 2 are physical changes

Which of the following is an example of a chemical change?

• Melting butter on toast

• Souring milk

• Teeth chewing food

• Changing the size and shape of something

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

On what property is distillation of water based?

• Density

• Evaporation

• Boiling Point

• Melting Point

Tags

NGSS.MS-PS1-4

Which of the following is/are a pure substance?

• Gold (Au)

• NaCl

• Sugar

• All of the above

Tags

NGSS.MS-PS1-4