Chapter 2 modeling matter

Front

What is a model in science?

Back

A model is a representation or drawing that helps explain or demonstrate a concept or idea.

Front

What does it mean if a substance is soluble?

Back

A substance is soluble if it can dissolve in water or if its molecules are attracted to water.

Front

How can you prove that sugar is still present in water after it dissolves?

Back

You can let the water evaporate, leaving the sugar at the bottom of the cup.

Front

What happens to solid molecules like cumin or pepper when they are not attracted to liquid molecules?

Back

The solid molecules cluster together instead of dissolving.

Front

What does it mean when two substances have a high attraction when mixed?

Back

It means they are completely mixed together.

Front

What is the term for a substance that does not dissolve in water?

Back

Insoluble.

Front

What is the process called when a solid turns into a liquid?

Back

Melting.

Front

What is evaporation?

Back

Evaporation is the process where liquid turns into vapor, often due to heat.

Front

What is the difference between soluble and insoluble substances?

Back

Soluble substances can dissolve in water, while insoluble substances cannot.

Front

What is a solute?

Back

A solute is a substance that is dissolved in a solution.