Question

1) Stage 1: What is a property of gas?

A) Molecules slide past one another
B) Molecules vibrate in place
C) Molecules are separated and far apart and move independently from each other

2) Stage 1: What is a property of a liquid?
A) Molecules slide past one another
B) Molecules vibrate in place
C) Molecules are separated and far apart and move independently from each other

3) Stage 1: What is a property of a solid?
A) Molecules vibrate in place
B) Molecules are separated and far apart and move independently from each other
C) Molecules slide past one another

4) Stage 2: At what temperature does water (liquid) change to a solid (freezing)?
A) 100 degrees C
B) 10 degrees C
C) 50 degrees C
D) 0 degrees C

5) Stage 2: At what temperature does water start to boil (boiling point)?
A) 50 degrees C
B) 10 degrees C
C) 0 degrees C
D) 100 degrees C

Answer 1

A gas has molecules that are far apart and move independently. A liquid has molecules that can slide past each other, while in a solid, molecules vibrate in place. Water freezes at 0 degrees C and boils at 100 degrees C.

Step-by-step explanation:

Properties of Matter

The properties of gases, liquids, and solids reflect the behaviors of their molecules. A property of a gas is that the molecules are separated and far apart, moving independently from each other. A property of a liquid is that its molecules slide past one another. For solids, the molecules vibrate in place, maintaining a fixed volume and shape.

Boiling and Freezing Points of Water

Water, as a liquid, changes to a solid, or freezes, at 0 degrees C, which is the same temperature as its melting point. The boiling point of water, the temperature at which it changes to gas, is 100 degrees C. This fixed temperature reflects the energy needed to overcome intermolecular forces and allow the molecules to move freely as a gas.