Unit 1 Practice Exam

How is a liquid defined?

• Indefinite shape, indefinite volume

• Definite shape, definite volume

• Found in stars

• Definite volume, indefinite shape

How is a gas defined?

• no definite shape, no definite volume

• Definite shape, definite volume

• Found in stars

• Definite volume, no shape

At higher temperatures

• particles in an object have less energy
• particles in an object move faster
• a gas contracts

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which state of matter has tightly packed molecules?

• solid
• liquid
• gas

Tags

NGSS.MS-PS1-4

Thermal energy is...

• heat energy.
• the energy of motion
• energy of nuclear processes.
• an indication of physical change.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

A chemical change

• doesn't really change much.
• creates a new substance
• is a change in the state of matter

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

A physical change is...

• a change that doesn't change the identity
• a change that makes something new.
• a chemical reaction

Tags

NGSS.MS-PS1-4

Glucose (C₆H₁₂O₆) contains atoms of carbon, hydrogen, and oxygen that are chemically bonded together.  What type of matter is glucose?

• Glucose is an element
• Glucose is a compound 
• Glucose is a mixture
• Glucose is a metal

The smallest particle of any element that still has the properties of that element is called

• an atom
• a compound
• a solution
• a mixture

A pure substance that is made from one type of atom is a(n) ______________ .

• Mixture
• Atom
• Element
• Compound