Science 2nd 9 Week's Benchmark

Front

What happens when you drop food coloring into water?

Back

The molecules of the dye and the molecules of the water are attracted to each other, and the particles of the red dye spread out evenly.

Front

What are the properties of a substance?

Back

Properties describe the characteristics of a substance, such as color, taste, and state (solid, liquid, gas).

Front

What is evidence that a new substance has formed?

Back

The new substance has different properties than the original substances.

Front

How do gas particles behave?

Back

Gas particles are high energy and bounce everywhere.

Front

What is matter?

Back

Matter is anything that has mass and takes up space.

Front

What is a molecule?

Back

A molecule is a group of atoms bonded together.

Front

What is the difference between a solid, liquid, and gas?

Back

Solids have a fixed shape, liquids take the shape of their container, and gases fill the entire space available.

Front

What is an example of a physical change?

Back

Melting ice is a physical change because it changes from solid to liquid but remains water.

Front

What is an example of a chemical change?

Back

Burning wood is a chemical change because it creates new substances (ash, smoke) and cannot be reversed.

Front

What is temperature?

Back

Temperature is a measure of how hot or cold something is.