Pretest - States Of Matter

When something melts, it undergoes a phase change from a solid state to a liquid state. This occurs when the substance absorbs enough heat energy to break the intermolecular forces holding its particles together in a rigid structure. As a result, the particles gain enough kinetic energy to move more freely, causing the substance to change from a solid to a liquid.

The particles in the picture are in a gaseous state because they are spread out and not tightly packed together. In a gas, the particles have enough energy to move freely and independently of each other.

In a solid state of matter, the particles are tightly packed and closely bonded to each other. This results in a fixed shape and volume for solids. The strong intermolecular forces between the particles prevent them from moving freely, causing them to vibrate in place. Therefore, the particles in a solid state are indeed really close together compared to particles in other states of matter such as liquids, gases, or plasmas.

Condensation is the process in which a gas changes into a liquid state. During condensation, the gas molecules lose energy and come together to form liquid droplets. This change occurs when the temperature of the gas decreases or when the gas comes into contact with a cooler surface. Therefore, condensation is the correct answer as it represents the change from gas to liquid.

Water vapor is the gaseous form of water. When water is heated, it undergoes a phase change from liquid to gas, and this gaseous form is known as water vapor. It is invisible to the naked eye and is lighter than air. Water vapor is constantly present in the Earth's atmosphere and plays a crucial role in the water cycle and weather patterns.

solid, liquid, gas, plasma

Plasma is a charged gas. The charges in the picture indicate charged atoms

Compressing a gas means you are making the distance between the gas particles shorter. This means compressing the gas decreases the gases volume

SOLIDS have a definite shape and volume
LIQUIDS have a definite volume but the shape comes from the container they are in
GAS has no definite shape or volume
PLASMA has no shape or volume

Plasma is ionized gas, so there is lots of space between those gas particles

Water can exist in all three states of matter: solid, liquid, and gas. At low temperatures, water freezes and becomes a solid (ice). At room temperature, water is a liquid, and at high temperatures, it boils and turns into a gas (water vapor). This is due to the unique properties of water molecules and the changes in their arrangement and movement as temperature and pressure change. Therefore, water can be found in all three states, making "all of the above" the correct answer.