Chem - M1- U2 -SA1 - Criteria A

Which of the following is a characteristic of solids?

• Particles move freely in all directions

• Particles are tightly packed and vibrate in place

• Particles are loosely packed and slide past each other

• Particles have no definite shape or volume

Which state of matter takes the shape of its container but has a fixed volume?

• Solid

• Liquid

• Gas

• Plasma

According to the particle theory, which of the following is true?

• All matter is made up of small particles

• Particles in a solid move faster than in a gas

• Particles in gases are tightly packed together

• Liquids have a definite shape

How does an increase in temperature affect the movement of particles in a substance?

• Particles slow down and move closer together

• Particles move faster and spread out

• The number of particles decreases

• The particles stop moving

Which of these best describes the kinetic theory of gases?

• Gas particles are in constant random motion

• Gas particles do not move

• Gas particles have strong forces of attraction between them

• Gases have a definite shape and volume

What happens to the air inside a balloon when it is placed in a freezer?

• The balloon expands because the particles move faster

• The balloon shrinks because the particles slow down

• The balloon bursts because the particles collide more

• The balloon disappears because the air escapes

Observe the given picture for an experiment conducted with a metal ball and a ring. Why does the ball NOT pass through the ring after heating.

Answer explanation

Metal ball (solid) expands on heating and thus does not fit through the ring after heating

On a cold day, you can see your breath in the air, but on a warm day, you cannot. What causes this?

• The warm air holds more moisture, making it invisible

• The air is too warm for breathing

• Cold temperatures cause water vapor in your breath to condense into tiny droplets

• Your breath disappears in hot weather

Explain why liquids take the shape of their container but do not expand to fill it completely.

Why does a pressure cooker cook food faster than an open pot?

• It increases the temperature and pressure at which water boils, cooking food faster

• It allows more heat to escape

• It keeps the food away from direct heat

• It increases the number of particles in the food