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7h
Key Stage 3 Science
| Question | Answer |
|---|---|
| All matter is made up of tiny particles called? | atoms |
| What is an element | A substance containing only one type of atom |
| Where can a list of all the elements be found? | Periodic table |
| What is a compound | A substance made of two or more different elements that are chemical joined together |
| What is a mixture? | Two or more different elements or compounds which are not chemically joined together |
| What are the 3 particles that make up an atom? | Proton, neutrons and electron |
| What are the charges of the 3 particles? | Protons-positive, Neutron-neutral Electron- negative |
| What particles are found in the nucleus? | Protons and neutrons |
| What particles are found in the shells | Electrons |
| How many electrons can be held in the 1st, 2nd and 3rd shells | 1st= 2 2nd = 8 3rd= 8 |
| What can the atomic number tell you about the atom? | The number of protons present in the nucleus |
| What does the mass number tell you about the atom | The number of protons and neutrons in the nucleus |
| What is a compound | A substance made of two or more different elements that are chemical joined together |
| What is a chemical change? | A process in which one or more substances are changed into others, by their atoms being rearranged. Also known as irreversible reactions. |
| What is a physical change? | A process in which the physical properties are changed, but no new substances are made. Also known as reversible reactions. |
| What is a reactant? | A substance that reacts together with another substance to form products during a chemical reaction. |
| What is a product? | A substance formed in a chemical reaction. |
| What are the 3 particles that make up an atom? | Proton, neutrons and electron |
| What is conservation of mass? | The total mass of the products in a chemical reaction will be the same as the total mass of the reactant. |
| Iron + Oxygen --> | Iron Oxide |
| Name the compound that contains copper, sulfur and oxygen | Copper Sulfate |
| All matter is made up of tiny particles called? | atoms |
| What is an element? | A substance containing only one type of atom |
| What are the charges of the 3 particles? | Protons-positive Neutron-neutral Electron- negative |
Created by:
Davenant Foundation School
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