Flashcards
Chemistry - Grade 9 Review
Flashcards do conjunto (19)
- 1MatterAnything that has mass and takes up volume.
- 2Pure SubstancesMatter that contains only one type of material and are uniform throughout.
e.g. pure water - 3MixturesMatter that contains two or more pure substances mixed together
- 4Homogeneous mixture / SolutionA mixture of one substance dissolved in another which cannot be seen; the different substances are evenly mixed in a solution
- 5Heterogeneous / Mechanical mixtureA mixture that contains more than one type of particle and the different particles are visible.
- 6Particle theory of matterA theory that describes the composition and behaviour of matter
- 7Postulate 1 of particle theory of matterAll matter is made of particles and they have spaces between them.
- 8Postulate 2 of particle theory of matterAll substances have their own specific particles
- 9Postulate 3 of particle theory of matterParticles are in constant motion
- 10Postulate 4 of particle theory of matterParticles attract each other.
- 11Postulate 5 of particle theory of matterParticles vibrate faster when heated.
- 12AlloyA solid mixture of 2 or more metals
e.g. solder is a combination of tin and copper - 13Physical propertyA characteristic of a substance that can be determined without changing the substance
e.g. colour, texture, conductivity, state of form. - 14chemical propertyA characteristic of a substance that can be determined by changing the substance.
e.g. flammability, combustibility, reactivity - 15Physical changeA change in the physical state of form of matter without any change in the chemical composition and no new substances are formed.
e.g. ice melting, chopping wood. - 16Chemical changeA change in the the chemical composition of matter with the creation of new substances.
e.g. exploding fireworks, burning fuel. - 17characteristic physical propertyA property that is unique to a substance and can be used to identify the substance
e.g. Density, freezing point, melting point, boiling point, - 18ElementA substance that cannot be made into simpler substances by ordinary means.
E.g. Sodium (Na), Chlorine (Cl) - 19CompoundA pure substance made of two or more different elements that are chemically combined.
E.g. Table salt (NaCl)
Informações
- Descrição
- Grade 9 - Properties of Matter
- Criado por
- Usuário eliminado · jun 2021
- Atualizado
- 10 jun 2021
- Visualizações
- 11
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- Histórico
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- Criado por Adi Chhabra · 12 set 2015
- Copiado por Francesca gore · 10 jun 2021
- Avaliação