🤗HW31: 12.15

Front

What is a physical property?

Back

A characteristic of a substance that can be observed or measured without changing its identity, such as color, odor, or state of matter.

Front

What is the difference between a compound and an element?

Back

An element is a pure substance that cannot be broken down into simpler substances, while a compound is made up of two or more elements chemically combined.

Front

What phase change occurs when a solid turns into a liquid?

Back

Melting.

Front

What are the three main states of matter?

Back

Solid, liquid, and gas.

Front

What happens to the state of matter when ice is left out at room temperature?

Back

It changes from solid (ice) to liquid (water) and then to gas (water vapor).

Front

What is a mixture?

Back

A combination of two or more substances that are not chemically bonded and can be separated by physical means.

Front

What is an example of a physical change?

Back

Melting ice, breaking a glass, or dissolving sugar in water.

Front

What is the definition of a molecule?

Back

A group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Front

What is the process of condensation?

Back

The change of state from gas to liquid, often seen when water vapor cools and forms droplets.

Front

What is evaporation?

Back

The process by which liquid turns into vapor, usually occurring at the surface of the liquid.