Unit 6: Properties of Matter in Aqueous Solutions - 7th Sci

Front

What is a chemical change?

Back

A chemical change is a process where one or more substances are transformed into new substances with different properties. An example is burning wood.

Front

What is an indicator of a chemical change?

Back

The formation of a new substance is the best indicator that a chemical change has occurred.

Front

What happens during a physical change?

Back

In a physical change, the form of a substance changes, but its chemical composition remains the same. An example is melting ice.

Front

What is an example of a chemical change?

Back

Frying an egg is a chemical change because a new substance is formed.

Front

What evidence indicates a new substance is produced in a reaction?

Back

Bubbles being given off is evidence that a new substance is produced.

Front

How does agitation affect the dissolving process?

Back

Agitation helps dissolve a solute more quickly by bringing fresh solvent into contact with undissolved solid.

Front

What is an aqueous solution?

Back

An aqueous solution is a solution in which water is the solvent.

Front

What is solubility?

Back

Solubility is the ability of a substance to dissolve in a solvent at a given temperature and pressure.

Front

What is a solute?

Back

A solute is a substance that is dissolved in a solvent to form a solution.

Front

What is a solvent?

Back

A solvent is the substance that dissolves a solute, forming a solution. Water is a common solvent.