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| Question | Answer |
| Define matter | Matter-is anything that has a mass or takes up space. |
| State the Particle Theory | - All matter is made up of particles -have spaces -always moving -attract |
| Explain Chemical properties and examples | Ability of a substance to change into a new substance. i.e., combustible, forms precipitate, emits heat or light, reacts to acid/water. |
| Explain Physical properties | A characteristic of a substance that can be observed/measured i.e., melting point, colour/lustre, conductivity, viscous, malleable, ductile |
| There are 4 gas tests: hydrogen, oxygen, carbon dioxide, water vapour. Describe each one. | Hydrogen-detected using a flaming splint which exploded. Oxygen-detected using a glowing splint which flames Carbon dioxide- detected using limewater which went cloudy. Water vapour-detected using cobalt chloride paper which turned pink. |
| Define Electrolysis | decompose a chemical compound by passing electricity through it. |
| what is a compound? | a pure substance made up of two or more elements that are chemically combined |
| What do chemical formula's do? | Identify which element and how many there are in the compound. |
| JJ Thomson was known for the___ method. What was his experiment? | Known for the raison bun method. Experimented with electric currents in glass tubes called cathode ray tubes. This caused atoms to produce streams of negatively charged particles. |
| Ernest rutherford known for___ method. What was his experiment? | Known for electron cloud model. He fired positively charged particles at a thin gold foil. Most went through although some deflected. |
| What did chadwick discover? | He discovered that the nucleus contains both neutral and positive particles |
| What did Bohr discover? | He discovered a solar system type model where electrons orbit around the nucleas |
| How many electrons can be in the first,second, and third valence shell. | 2,8,8 |
| Atomic Number? | Atomic Number: represents the number of protons present in an atom |
| Atomic Mass? | Atomic Mass: the mass of 1 atom of an element; measured in atomic mass units (amu) |
| How are the metals,metalloids,non-metals arranged on the periodic table | Metals ended up on the left side, non-metals on the right side and metalloids in the middle |
| What's an Ion? metals tend to ___ electrons and non-metals tend to ___ electrons. | Ions form when atoms gain or lose electrons and become negative or positive.Metals tend to lose electrons and non-metals gain electrons |
| What are the 4 families in the peri0odic table? | Alkali Metals,Alkaline Earth Metals , Halogens,Nobel Gases |
| Describe the location of the Alkaline metals, Alkaline earth metals, Halogens, Noble gases | Alkaline metals- group1 Alkaline earth metals- group 2 Halogens-17 Noble gases-18 |
| What is PEN? | Protons=atomic number Electrons=# protons Neutrons= atomic mass - atomic number |
| PHYSICS | PHYSICS |
| Define conductor and insulator. | Conductor- allows movement/transmission of electrons through a substance. Insulator-resists movement of electrons within a substance |
| What is an electroscope? | Electroscope is an instrument that can detect a static charge |
| Define grounding. | grounding- process of connecting a charged object to the earths surface. |
| Define Current (I) | Current- continuous flow of electrons in a circuit. |
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