Unit 3 PS Review

What holds atoms together in molecules?

• glue

• bonds

• nothing

• magnets

What basic process is shown in the diagram?

• Sharing electrons

• Gaining and loosing electrons

• sharing protons

• gaining and loosing protons

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

what kind of bond is shown in the picture?

• Ionic bond

• Covalent bond

• Sharing bond

• Gaining bond

Tags

NGSS.MS-PS1-2

How do you know if a chemical reaction has occurred?

• Atoms disappear

• A change of color

• Thermal change (temperature change)

• Fizzing

Tags

NGSS.MS-PS1-2

Name the following substance:

• glucose

• sodium chloride

• water

• magnesium sulphate

Tags

NGSS.MS-PS1-1

Why do elements bond?

• To be friends

• To create a new element

• To become stable

• To get bigger

Which of these is not a real bond in chemistry?

• James

• Ionic

• Covalent

• Metallic

Ionic bonds are between...

• nonmetals and nonmetals
• carbon and oxygen
• metals and nonmentals
• hydrogen and chlorine

Tags

NGSS.HS-PS1-2

Covalent bonds are between...

• two or more nonmetals
• sodium and chlorine
• metals and metals
• metals and nonmetals

Tags

NGSS.MS-PS1-1

What kind of bond forms when atoms exchange electrons?

• ionic
• covalent
• artificial
• univalent