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Stack #4687195
| Question | Answer |
|---|---|
| What particles make up an atom | Protons neutrons and electrons |
| Where are protons and neutrons found | In the nucleus |
| Where are electrons found | In shells around the nucleus |
| What is an element | A substance made of one type of atom |
| What is a compound | A substance made of two or more different elements |
| Where are all elements listed | In the Periodic Table |
| What do element symbols represent | The name of the element |
| What does the atomic number show | The number of protons |
| In a neutral atom what equals the atomic number | The number of electrons |
| What does the mass number show | The total protons and neutrons |
| How do you calculate neutrons | Mass number minus atomic number |
| What is the maximum electrons in the first shell | 2 |
| What is the maximum electrons in the second shell | 8 |
| What is the maximum electrons in the third shell | 8 |
| What is the maximum electrons in the fourth shell | 2 |
| What is an electron configuration | The arrangement of electrons in shells |
| What is the pattern for the first 20 elements | 2 8 8 2 |
| What is an isotope | Atoms of the same element with different neutrons |
| What is a stable isotope | One that does not decay |
| What is an unstable isotope | One that undergoes radioactive decay |
| What is nuclear radiation | Energy or particles released from unstable nuclei |
| What is alpha radiation | A helium nucleus |
| What is beta radiation | A fast moving electron |
| What is gamma radiation | A high energy electromagnetic wave |
| Which radiation is most ionising | Alpha |
| Which radiation is most penetrating | Gamma |
| What is radioactive half life | Time for half the nuclei to decay |
| What is a use of radioactivity in medicine | Cancer treatment or tracers |
| What is a danger of radioactivity | Cell damage or mutations |
| What is a group in the periodic table | A vertical column |
| What is a period in the periodic table | A horizontal row |
| Where are metals found in the periodic table | On the left |
| Where are non metals found in the periodic table | On the right |
| What are Group 1 elements called | Alkali metals |
| What are Group 2 elements called | Alkaline earth metals |
| What are Group 17 elements called | Halogens |
| What are Group 18 elements called | Noble gases |
| Which elements are liquids at room temperature | Bromine and mercury |
| How does reactivity change down Group 1 | It increases |
| How does reactivity change down Group 17 | It decreases |
| Why do atoms form ions | To achieve a full outer shell |
| What ion do metals form | Positive ions |
| What ion do non metals form | Negative ions |
| What charge do Group 1 ions have | Plus one |
| What charge do Group 2 ions have | Plus two |
| What charge do Group 17 ions have | Minus one |
| What is an ionic bond | Transfer of electrons |
| What is a covalent bond | Sharing of electrons |
| What is the law of conservation of mass | Mass is not created or destroyed |
| What are the products of hydrocarbon combustion | Carbon dioxide and water |
Created by:
ethanscience