1
Some materials, like wook, can burn. When they burn, it reacts with the oxygen in the air. As a result, new materials are formed like ash and smoke. This process is called:
2
Atoms in some metals, like iron, react with the oxygen in the air and water. When this happens, a new substance if formed: rust. This process if called:
3
When organic matter decomposes, this chemical change happens. It with fresh food after some days. The food changes color and smells bad.
4
In a ... mixture, it is not possible to see the different substances. For example: mayonnaise.
5
In an ... mixture it is possible to see the individual substances. For example, a fruit salad.
6
The state of a material is called ... when, for example, water is like ice.
7
The state of a material is called ... when, for example, you have milk.
8
The state of a material is called ... when, for example, you have air inside a balloon.
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