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7H
Key Stage 3 Science
| Question | Answer |
|---|---|
| All matter is made up of tiny particles called? | atoms |
| Define elements compounds and mixtures in terms of atoms | An element is made up of atoms that are all the same type. A compound is substance made up of atoms of different elements chemically joined together. Two or more different elements or compounds which are mixed and are not chemically joined together |
| Draw two particle pictures. One representing an element and one a compound. | What are the two differences between chemical and physical changes |
| Lists the signs of a chemical change | Colour change, temperature change, flame, gas produced, smell |
| What is a molecule | A group of atoms joined together |
| What is the dfference between Co and CO in terms of atoms. | Co is one atom CO is two different atoms joined together |
| List the typical properties of a metal | Shiny, Conduct electricity and heat, malleable and ductile |
| List the typical properties of a non metal | Dull, Do not conduct electricty or heat, brittle. |
| How do the properties of iron, sulfur and iron sulfide show a new compound has been made | in the reaction between iron and sulfur Iron is a magentic grey metal, Sulfur is a yellow powder, iron sulfide is a none metallic black solid |
| State the Law of Conservation of Mass | The total mass of the products in a chemical reaction will be the same as the total mass of the reactant |
Created by:
Davenant Foundation School
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