Benchmark Review: Atoms, Particles, Reactions and COM

What happens to particles when their temperature increases?

• The particles move slower

• The particles move faster

• The particles lose mass

• The particles gain mass

The slower molecules move, 

• the higher the temperature
• the less temperature
• the same temperature
• I don't know

The faster molecules move, 

• the higher the temperature
• the less temperature
• the same temperature
• I don't know

The model shows ice in a particle model. As thermal energy increased, the water particles _________________.

• moved apart; increased speed

• moved closer; increased speed

• moved apart; decreased speed

• moved closer; decreased speed

In which state of matter are the molecules spaced farthest apart?

• Solid

• Liquid

• Gas

• All are equal

According to the Law of Conservation of Mass,

• matter is always created in a chemical reaction

• matter is always destroyed in a chemical reaction

• matter is created and then destroyed in a chemical reaction

• matter is not created or destroyed in a chemical reaction

The law of conservation of mass can be demonstrated by a chemical reaction. Which of the following models of a chemical reaction best represents the law of conservation of mass?

• 
• 
• 
• 

During A to B what phase of matter is the substance?

• Solid

• Liquid

• Gas

• Plasma

From E to F, what phase of matter is the substance?

• Solid

• Liquid

• Gas

• Plasma

How many Oxygen are in H₂O?

• 1
• 2
• 0
• 4