Unit 1 & 2 Review Questions

This matter has no definite shape and no definite volume

• Solid
• Liquid
• Gas
• Element

Answer explanation

Solid- Definite Shape and Volume

(its shape and volume stay the same)

Liquid- No Definite Shape, Definite Volume

(it takes the shape of the container, but it does not fill it)

Gas- No Definite Shape, no Definite Volume

(it fills the container it is in)

Tags

NGSS.MS-PS1-4

What is the term for the amount of space a substance or object takes up?

• Density

• Weight
• Volume

• Mass

Answer explanation

When a gas is cooled (the kinetic energy is less) it becomes a ______?

Answer explanation

The cooling of a gas causes the molecules move slower then the gas to condense into a liquid.

The heating of liquid causes evaporation, the molecules move faster and become a gas.

Tags

NGSS.MS-PS1-4

Elements and Compounds are both ____ substances.

Answer explanation

Metals generally have the property of _________, meaning they can be stretched or drawn into wire.

• Ductility

• Malleability

• Insulator

• Conductor

Answer explanation

Ductility = made into WIRE

Malleability = hammered into SHEETS or other shapes

If a substance can be dissolved it has the property of _________?

• Ductility

• Insulator

• Flammability

• Solubility

Answer explanation

Substances, such as salt or sugar, that can dissolve in a liquid are said to have solubility.

They can create a solution like saltwater.

What form of matter has a definite shape that doesn't change and whose molecules move very little?

Answer explanation

Tags

NGSS.MS-PS3-4

Elements like Oxygen, Helium, and Nitrogen are both _________ and _______. (choose two)

• Liquids

• Nonmetals

• Metalloids

• Gases

Answer explanation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Elements have a single type of ____.

Compounds are made of two or more different ____.

• atom; particles

• atom; atoms

• solution; molecules

Answer explanation

Tags

NGSS.MS-PS1-1

A solution is a homogeneous mixture, meaning the particles are...?

• completely separate from each other
• concentrated in one area
• evenly distributed throughout the mixture
• randomly scattered in the mixture

Answer explanation