Chp. 2 Review

What does matter refer to? Fill in the blank: Matter refers to anything that takes up space and has _____?

• mass

• color

• temperature

• shape

Tags

NGSS.MS-PS1-5

Matter can exist as which of the following?

• Solid

• Liquid

• Gas

• All of the above

What is an element? Fill in the blank: An ______ is a substance that cannot be broken down into another substance by ordinary chemical means.

• element

• atom

• molecule

• compound

Tags

NGSS.MS-PS1-1

How many naturally occurring elements are there?

• 92

• 88

• 100

• 120

Which four elements make up about 96% of the body weight of most living organisms?

• carbon, hydrogen, oxygen, and nitrogen

• carbon, calcium, potassium, and sodium

• hydrogen, oxygen, phosphorus, and sulfur

• nitrogen, calcium, magnesium, and iron

What is the atomic symbol for hydrogen?

• H

• Na

• O

• He

Which of the following subatomic elements has no electrical charge and is found in the nucleus?

• Protons

• Neutrons

• Electrons

• Ions

Protons have a _______ charge and are found in the _______.

• positive, nucleus

• negative, nucleus

• positive, electron cloud

• neutral, cytoplasm

Tags

NGSS.MS-PS1-1

Electrons have a negative charge and are found _______ the nucleus moving in orbitals.

• outside of

• inside of

• on top of

• beneath

The mass number is equal to the sum of which two subatomic particles?

• Protons and neutrons

• Protons and electrons

• Neutrons and electrons

• Electrons and positrons

Tags

NGSS.HS-PS1-8