8th Science Review #2

What are valence electrons?

• Any of an atom's electrons

• Electrons located on the first energy level

• Electrons not attached to any atom

• electrons located on the outer energy level

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What period is Lead (Pb) in?

• 6

• 4

• Metals

• 4A

What group or family is lead in?

• 6

• 4

• Metal

• 4A

Tags

NGSS.HS-PS1-1

How many electrons does a Strontium (Sr) ION have?

• 38

• 10

• 8

• 36

Tags

NGSS.HS-PS1-1

How many neutrons does Bromine (Br) have?

• 35

• 80

• 45

• 7

Tags

NGSS.HS-PS1-8

What period contains the element Plutonium (Pu)?

• 8

• 6

• 7

• Plutonium doesn't exist

what is the biggest group on the table

• metals

• nonmetals

• metaloids

• halogens

Which is a producer?

• deer
• tall grass
• lion
• worm

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What does a food web represent?

• All connections of energy flow throughout all organisms in a ecosystem.
• The specific ways that mutualism is carried out.
• A single pathway or energy flow between organisms. 
• How carnivores get their food. 

Tags

NGSS.MS-LS2-3

The diagram shows an example of what kind of organism

• Autotroph
• Heterotroph
• Decomposer
• Herbivore

Tags

NGSS.MS-LS1-6