Flashcards
Science revision
Cards in this deck (21)
- 1LavoisierHe made the idea that the total mass of substances in a chemical reaction remains constant.
(The Law of conservation mass) - 2DaltonFound out that even though atoms can't be seen all matter must be made of separate particles.
(Atomic theory) - 3MendeleevHe established the basic structure of the periodic table.
(Periodic table) - 4BunsenFound that each element produces unique sets of colored bands of light when heated.
- 5ThomsonShowed that an electric current could be bent by electric and magnetic fields.
- 6RutherfordHelped classify radiation/radioactivity.
- 7ChadwickDiscovered electrically neutral neutrons.
- 8State the law of conservation massThe total mass of the reactants that are put in at the beginning of an experiment will be the same as the total mass of the products that are collected at the end of the experiment.
- 9What is an isotope?Atoms with the same number of protons but different numbers of neutrons.
- 10Why are Pierre and Marie Curie famous?They invented the term radioactivity
- 11Alpha particlesA nucleus emitted by some radioactivity- cannot travel through paper.
- 12Beta particlesFast-moving electron emitted by radioactive decay-cannot travel through aluminum.
- 13Gamma particlesPenetrating electromagnetic radiation of a kind arising from the radioactive decay - cannot travel through lead.
- 14What is a half-life?The time it takes for a particle to halve.
- 15What are two uses of radiation?Radiotherapy- cancer treatments
Nuclear bombs - 16What are reactants?Chemicals that are put into chemical reactions.
- 17what are products?Are chemicals that come out of the chemical reaction.
- 18DecompositionCINa - CI + Na
Sodium chloride - chlorine + sodium - 19Synthesis2H + O2 = H2O
Hydrogen + oxygen = water - 20Single displacementMg + CuSO4 - MgSo4 + Cu
- 21Double displacementNa2S + 2
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- Year 9 Sciences Flashcards on Science revision, created by Abby Postle on 11/09/2019.
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- Abby Postle
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