| A | B |
| compound | the combination of two or more elements that bond together |
| nutritious | nourishing or good food for you to eat |
| reduce | to make something less or smaller |
| iron oxide | a compound made of iron and oxygen |
| model | a science tool that helps us learn about real things that are too big, too small, too expensive, or too dangerous to use |
| dense | heavy |
| steel | a metal made by combining iron and carbon |
| compare and contrast | to observe how things are alike and different |
| ingredient | an element in a compound or mixture |
| mixture | a combination of two or more kinds of matter |
| solution | a special kind of mixture made when two things are dissolved in liquid |
| indigo | a blue dye |