Structure & Properties of Matter

A producer carriers out photosynthesis is an example of what type of reactions?

• Endothermic

• Exothermic

Tags

NGSS.MS-LS1-6

A flammable material is burning is an example of what type of reactions?

• Endothermic

• Exothermic

Tags

NGSS.HS-PS1-4

A chef is cooking an egg is an example of what type of reactions?

• Endothermic

• Exothermic

Tags

NGSS.MS-PS3-4

NGSS.MS-PS1-2

In science, the term "heat" is used to describe which of the following?

• The motion of atoms or molecules within a product

• The transfer of thermal energy from one object to another object

• The average temperature of a substance.

• The average Kinetic energy of the system as a whole

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When thermal energy is removed from a system, what happens to the temperature and the average kinetic energy of the system?

• Temperature decreases, average kinetic energy increases

• Temperature decreases, average kinetic energy decreases

• Temperature increases, average kinetic energy increases

• Temperature increases, average kinetic energy decreases

Tags

NGSS.MS-PS1-4

Describe the particle structure of liquids.

• Particles are ver close together with little movement

• Particles are relatively close together with movement relevant to eachother

• Particles are far apart and have frequent collisions with each other

• Particles are far apart with a lot of movement relevant to each other without collisions.

How are the molecules in a gas different from the molecules in other states of matter?

• The molecules in a gas move at a faster rate and are farther apart

• The molecules of a gas are much larger and farther apart

• The molecules of a gas move at a slower rate and are closer together

• The molecules of a gas are not any different

Tags

NGSS.MS-PS1-4

What happens to water molecules when a large quantity of thermal energy is added to water in the liquid state?

• The more thermal energy added, the greater the attraction between molecules.

• The molecules gain kinetic energy, move farther apart, and become a gas.

• The water molecules become packed closer together, and their temperature increases.

• Each molecule gives up kinetic energy and eventually stops moving.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Thermal energy is removed from a sample of a substance. All of the following changes will result EXCEPT-

• molecules becomes closer together and more packed

• the temperature decreases

• the molecules of the system will loose kinetic energy

• total energy will increase

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

A scientist combines two chemicals into a beaker to cause a chemical reaction. What data is needed to determine if the reaction absorbed or released thermal energy?

• The weight of the substances before and after

• The temperature inside the beaker before and after

• Whether or not light and sound were produced

• The time it took for the reaction to take place

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4