Chapter 2 Quiz

The scattering of light by particles in a mixture is

• heterogenous mixture

• Tyndall Effect

• fog

• Precipitate of Solution

• Viscosity of particles

Any solid that forms and separates from a liquid mixture

• compound

• precipitate

• heterogenous

• solution

A group of two or more atoms bound by chemical bonds can be of the same element

• solutions

• heterogenous

• molecules

• homogenous mixture

• standard solutions

Tags

NGSS.MS-PS1-1

Which material is a poor conductor of heat?

• Silver

• Oak

• Iron

• Copper

• Sand

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which of the following is not an example of a physical property?

• hardness

• flammability

• melting point

• density

• conductivity

The Law of Definite Composition states

• When matter undergoes a chemical change, the composition of the matter changes. When matter undergoes a physical change, the composition of the matter remains the same

• The properties of a mixture can vary because the composition of mixture is not fixed

• Every sample of a given substance has the same properties because a substance has a fixed uniform composition

• Chemical properties can be observed only when the substances in a sample of matter are changing into different substances

• A given compound contains the same fixed ratio of elements

Tags

NGSS.MS-PS1-1

Which of these substances is not an element?

• hydrogen

• iron

• gold

• copper

• table salt

Which property can be used to separate a mixture by distillation?

• melting point

• density

• boiling point

• viscosity

• conductivity

A pure substance contains only one type of atom.

• True

• False

During which of these events does a chemical change occur?

• ice cubes melt

• A pot of water boils

• A heated iron turns red

• a paper clip is bent

• a cake rises in the oven

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5