Matter & Energy Practice Test

• an element

• a compound

• a homogeneous mixture

• a heterogeneous mixture

Tags

NGSS.MS-PS1-1

Which particle diagram represents a sample of matter that CANNOT be broken down by chemical change?

• 
• 
• 
• 

Tags

NGSS.HS-PS1-7

Object A at 40^oC and object B at 80^oC are placed in contact with each other. Which statement describes the heat flow between the objects?

• Heat flows from object A to object B.

• Heat flows from object B to object A.

• Heat flows in both directions between the objects.

• No heat flow occurs between the objects.

Tags

NGSS.HS-PS3-4

What occurs when a 35-gram aluminum cube at 100^oC is placed in 90. grams of water at 25^oC in an insulated cup?

• Heat is transferred from the aluminum to the water, and the temperature of the water decreases.

• Heat is transferred from the aluminum to the water, and the temperature of the water increases.

• Heat is transferred from the water to the aluminum, and the temperature of the water decreases.

• Heat is transferred from the water to the aluminum, and the temperature of the water increases.

Tags

NGSS.HS-PS3-4

What is the total amount of heat required to vaporize 1.00 gram of H₂O(l) at 100^oC and 1 atmosphere?

• 4.18 J

• 334 J

• 373 J

• 2260 J

Which process is exothermic?

• boiling of water

• melting of copper

• condensation of ethanol vapor

• sublimation of iodine

The graph represents the relationship between temperature and time as heat is added to a sample of H₂O. Which statement correctly describes the energy of the particles of the sample during interval BC?

• Potential energy decreases and average kinetic energy increases.

• Potential energy increases and average kinetic energy increases.

• Potential energy increases and average kinetic energy remains the same.

• Potential energy decreases and average kinetic energy remains the same.

Tags

NGSS.HS-PS3-4

NGSS.HS-PS3-2

The graph represents the uniform heating of a substance, starting below its melting point, when the substance is solid. Which line segments represent an increase in average kinetic energy?

• AB and BC

• AB and CD

• BC and DE

• DE and EF

Tags

NGSS.HS-PS3-4

NGSS.HS-PS3-2

The graph shows the heating curve of 1.0 gram of a solid as it is heated at a constant rate, starting at a temperature below its melting point. Based on this graph, what is the heat of vaporization?

• 200 calories, as measured along line BC

• 250 calories, as measured along line BC

• 400 calories, as measured along line DE

• 800 calories, as measured along line DE

Tags

NGSS.HS-PS3-4

A student obtained the data in the table while cooling a substance. The substance was originally in the liquid phase at a temperature below its boiling point. What is the freezing point of the substance?

• 70^oC

• 59^oC

• 53^oC

• 48^oC

Tags

NGSS.MS-PS1-4