Big Idea 8 and 9 Flashcard

Front

What is a chemical change?

Back

A chemical change is a process where substances combine or break apart to form new substances with different properties. Examples include cooking pancakes, rusting iron, and burning wood.

Front

What happens to the mass and volume of a balloon when it is inflated?

Back

The mass and volume of the balloon increase when it is inflated because air is added to the balloon.

Front

What is the best way to speed up the dissolving of salt in water?

Back

Stirring the water and applying heat are effective ways to speed up the dissolving process.

Front

What tool is used to measure the mass of an object?

Back

A balance is used to measure the mass of an object.

Front

What property can be used to separate different types of coins?

Back

Size can be used to separate different types of coins.

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force exerted by gravity on that mass.

Front

What is an example of a physical change?

Back

An example of a physical change is melting ice or chopping wood.

Front

What is the role of heat in dissolving substances?

Back

Heat increases the energy of the molecules, which can help break apart the solute and allow it to dissolve faster.

Front

What is the definition of volume?

Back

Volume is the amount of space that an object occupies, usually measured in liters or cubic centimeters.

Front

What is a mixture?

Back

A mixture is a combination of two or more substances that retain their individual properties, such as a mixture of different types of coins.