| A | B |
|---|
| I am a material that lets most light waves pass through it. | transparent |
| I am a material that lets some light pass through it. | translucent |
| I am a material that allows no light to pass through it. | opaque |
| I am the change in the direction of waves after they bounce off a surface. | reflection |
| I am the bending of waves as they travel at an angle from one medium to another. | refraction |
| I am a tiny building block of matter that cannot be seen even with a microscope. | atom |
| I am what is produced when atoms join together with other atoms. | molecule |
| I am a substance that cannot be broken down into a simpler substance. | element |
| I am a substance that is made up of two or more elements that have been combined chemically. | compound |
| I am the amount of matter in a substance. | mass |
| I am the amount of space matter takes up. | volume |
| I am a form of matter that has its own shape and volume. | solid |
