Quizizz Unit 2 Test Review

You forgot to dry the bread knife when you washed it and reddish brown spots appeared on it. What is a sign of a chemical change in this scenario?

• gas is produced

• New substance is made (reddish brown spots)

• production of light

• this is a physical change

When a piece of iron is left outside and it develops a reddish-brown coating, what type of change has occurred?

• Mechanical change

• Physical change

• Chemical change

• Phase change

Which of the following is an indicator of a chemical change when a metal is exposed to air?

• Melting

• Formation of rust

• Change in shape

• Breaking into pieces

A relationship between two species where one benefits while the other is harmed.

• Commensalism

• Naturalism

• Mutualism

• Parasitism

A relationship between two organisms in which one organism benefits and the other is unharmed

• mutualism

• commensalism

• parasitism

• competition

A frog eats a fly. The frog and fly are demonstrating ________.

• predator/prey

• mutualism

• competition

• parasitism

Tags

NGSS.MS-LS2-2

Barnacles create home sites by attaching themselves to whales. This neither harms nor benefits the whales. What kind of relationship is this?

• mutualism

• commensalism

• parasitism

• predator/prey

Tags

NGSS.MS-LS2-2

Two male Giraffes are fighting over the last green leaf of a tree that is dying.

• competition

• predator/prey

• mutualism

• commensalism

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Mistletoe extracts water and nutrients from a spruce tree. The spruce tree is harmed. 

• parasitism
• commensalism
• mutualism

Tags

NGSS.MS-LS2-4

Ostriches and gazelles feed next to each other. They both watch for predators and alert each other to danger. Because their visual abilities are different, they can identify threats that the other animal would not see as readily. 

• parasitism
• commensalism
• mutualism

Tags

NGSS.MS-LS2-2