Science 4.5 / 5 based on 2 ratings ? ChemistryAtomsGCSEAQA Created by: Annum1345Created on: 12-11-16 11:06 What is a Particle? A Particle is a tiny piece of matter 1 of 25 Give three examples of particles? Atoms, ions and molecules 2 of 25 Why can't you compress a substance in its solid state but in it liquid state? As there is no space for particles to move into in a solid state. 3 of 25 Why are models used in science? models are used in science to solve problems,to make predications and to develop understanding 4 of 25 What is a physical change? A physical change is a substance changes state or shape or breaks in to pieces. 5 of 25 What is a chemical change? A chemical change is a change which produces new susbtances 6 of 25 What happens when a substance changes state? When a substance change state its arrangement and movement change not its particles 7 of 25 What happens in a chemical reaction? In a chemical reaction particles break and join together in different ways 8 of 25 What are atoms? Atoms are the smallest part of a particles that make up a substance. 9 of 25 What is the equation for ratio? Ratio of distance to diameter=Distance between atom divided by diameter of an atom 10 of 25 What are forces between particles? There is an electrostatic force between negative and positive charges 11 of 25 What happens to the forces when there are further apart? As the force get further apart the bond becomes weaker 12 of 25 what are the limitation of models? It doesn't show: the forces between particles,the size of the particles and the space between the particles. 13 of 25 What is a molecule? A molecule is made of more than on atoms joining together 14 of 25 What it is inside a particle? subatomic particles 15 of 25 what is a mass number? A mass number tells you the number of protons and neutrons together 16 of 25 What are is the atomic number? The atomic number tells you the number of protons and electrons 17 of 25 what are isotopes? Iscotopes is an element with the same same numbers of electrons and protons nut different number of neutrons 18 of 25 What are ions? Ions are charged particles.They are formed when atoms or groups of atoms lose or gain electrons. 19 of 25 When did Dalton discover the particles model? 1803 20 of 25 What was Dalton theory? All things are made from atoms and atoms are tiny hard spheres 21 of 25 When did thompson discover the electron? 1897 22 of 25 what was Thompson's theory? Atoms had an overall charged therefore had to contain a positive charge 23 of 25 What was Rutherford theory? Rutherford theory was that electron orbit around a nucleus 24 of 25 What had Bohr did? Bohr had developed Rutherford experiment 25 of 25
Comments
Report