Matter test practice

How have models of the atom changed over time?

• They have remained the same

• They have become more complex

• They have become simpler

• They have been replaced by molecule models

What do isotopes of an element typically have in common?

• Different chemical properties

• Many similar characteristics

• Different atomic numbers

• Different atomic masses

What is the model structure of an atom?

• A nucleus made up of protons and neutrons, surrounded by electrons

• A solid sphere with no internal structure

• A flat disk with electrons on the surface

• A single particle with no subatomic parts

Tags

NGSS.MS-PS1-1

What is the difference between physical and chemical properties of matter?

• Physical properties can be observed without changing the substance, chemical properties involve a change

• Physical properties involve a change, chemical properties do not

• Both involve changes in the substance

• Neither involves changes in the substance

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

• Density

• Melting point

• Reactivity with oxygen

• Color

What happens during a chemical reaction in terms of energy?

• Energy is either released or absorbed

• Energy remains constant

• Energy is always absorbed

• Energy is always released

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is a pure substance?

• A material with a constant composition

• A mixture of different elements

• A compound with varying composition

• A solution with dissolved substances

Tags

NGSS.MS-PS1-4

What is the boiling point?

• The temperature at which a liquid turns to gas

• The temperature at which a solid turns to liquid

• The temperature at which a gas turns to liquid

• The temperature at which a solid turns to gas

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is an electron?

• A negatively charged subatomic particle

• A positively charged subatomic particle

• A neutral subatomic particle

• A particle with no charge

What term describes changes that occur in the nucleus of an atom?

• Physical changes

• Chemical changes

• Nuclear changes

• Thermal changes

Tags

NGSS.HS-PS1-8