Midterm Exam

What does it mean for a reaction to be endothermic?

• When two substances react, the temperature of the mixture decreases.

• When two substances react, the temperature of the mixture increases.

Tags

NGSS.MS-PS1-4

What does it mean for a reaction to be exothermic? Choose 2 of the following.

• When two substances react, the temperature of the mixture decreases.

• When two substances react, the temperature of the mixture increases.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Jenny poured some hot chocolate into a cup and stirred it with a metal spoon.  She noticed the spoon was really warm.  What is the best explanation for this?

• The spoon is a conductor.

• The spoon reflects heat.

• The spoon is an insulator.

• She touched the spoon first and waited to touch the cup.

Tags

NGSS.MS-PS1-4

In the winter, some people heat their homes by burning logs in the fireplace.  How does the heat from the fire get to the other side of the room?

• it travels through the carpet by conduction

• it travels through the air by convection

• it travels through the carpet by radiation

• it travels with the smoke by condensation

Tags

NGSS.MS-PS1-4

What observation can you make about what happened to the snowman?

• It changed from a liquid to a solid

• It changed from a liquid to a gas.

• It changed from a gas to a solid.

• It changed from a solid to a liquid.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

When you leave your cold drink outside, the glass may have water drops on it.  This is an example of...

• condensation

• evaporation

• precipitation

• estuary

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When two substances combine to form a new substance, a _____ has occurred.

• chemical reaction

• physical reaction

• mixture

• solution

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Magma that reaches the surface is called:

• Vent

• Hot spot

• Lava

• Cinders

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

What type of volcano is shown on the model above? 

• Cinder Cone Volcano

• Composite Volcano

• Shield Volcano

What is the primary function of the mitochondria in a cell?

• Energy production

• Protein synthesis

• Photosynthesis

• Cell division

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-7