PS1.3 & PS3.1

Front

What changes occur to water when heat energy is added to it in a pot on a stove?

Back

Particles move faster, and temperature increases.

Front

How do the motion of the particles in the ice cream change when it is placed in the freezer?

Back

The particles slow down and move closer together.

Front

Classify phases 1, 2, and 3:

Back

1: water vapor; 2: ice; 3: liquid water

Front

The particle diagram represents a phase change of a substance. Between which two phases does the substance change?

Back

solid to gas

Front

How can a teacher verify that an animation showing particles in a substance is accurate when heat is added?

Back

Adding heat creates the effect of increased spacing between particles.

Front

What does the change from 'before' to 'after' most likely represent? Options: Condensation, Evaporation, Melting, Freezing

Back

Condensation

Front

Which substance has the weakest intermolecular forces between particles? Options: table salt, liquid water, helium gas, copper solid

Back

helium gas

Front

When thermal energy is added to an object, the motion of the particles

Back

increases.

Front

At what point on the phase diagram does carbon dioxide exist as a solid, liquid, and gas? Options: Z, Y, X, W

Back

Y

Front

Which observation shows that a chemical reaction released energy?

Back

The product of the reaction becomes warmer.