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11 Cards in this Set
- Front
- Back
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What is an indicator?
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A substance that changes colour when it reacts with acids or bases. the colour of it shows how acidic, neutral of basic the substance is.
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What is pH?
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pH is a scale from 1 to 14, 1 being very acidic and 14 being basic. This scale measures how acidic a substance is.
STRONG ACID: 0-1 WEAK ACID: 4-5 NEUTRAL: 7 WEAK BASE: 9-10 STRONG BASE: 13-14 |
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What is an acid?
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A chemical that reacts with a base to produce salt and water. Edible acids taste sour E.G. lemon & citric acid
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What is a base?
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A chemical that reacts with an acid to produce salt and water. Edivle bases taste bitter.
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What is an atom?
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A very small particle that makes up all things. Atoms have the same properties as the object they make up
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PARTS OF AN ATOM- Proton
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Proton- a proton is a particle that makes up an atom and is located in the nucleus of every atom. It has a positive charged and it uses this to balance out the electron, which is a negative charge. (P)
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PARTS OF AN ATOM- Neutron
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a neutron is a small particle in an atom. It is found in the Nucleus of an atom. A neutron does not have an electric charge, which is why it was called the neutron, because it is neutral. (N)
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PARTS OF AN ATOM- Electron
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an electron is a subatomic particle of an atom. Unlike the other particles, it located AROUND the nucleus. It has a negative charge, which balances out with a proton, as a proton has a positive charge. (e)
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What is an Element?
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A pure substance made up of only 1 type of atom.
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What is a Compound?
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2 or more different types of atoms that have been bonded together.
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What is a mixture?
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A combination of substances, in which it each keeps it owns properties.
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