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10 Cards in this Set
- Front
- Back
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What is a chemical change? |
The changes that occurs when atoms of more than one substance is rearranged to form one or more new substances. The new substances has a different physical/chemical property. More difficult to reverse. |
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What is a physical change? |
Changes in the physical appearance of matter without changing what it's made of. If it stays the same material it's a physical change. |
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What is a chemical property? |
How a substance reacts or fails to react with other substances. |
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What is a physical property? |
Characteristics of matter that are observed or measured without changing it's identity. |
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What is an isotope? |
Atoms of an element with the same atomic number but different atomic mass. This is due to a different number of neutrons. |
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What is an element? |
-Smallest particle is an atom. -Has chemical symbol. -Cannot be broken down under ordinary chemical means. -Pure substance. |
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What is a compound? |
-Smallest particle is a molecule. -Has a chemical symbol. -Can separate chemically. -Two or more elements combined. -Pure substance |
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What is a mechanical mixture? |
-Two or more phases. -All clarities. -See different parts. -Heterogeneous. -Mixture. |
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What is a solution? |
-Solute is fully dissolved in solvent. -Only one phase. -Transparent unless deeply coloured. -Homogeneous. -Mixture. |
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One substance or type of particle, fixed points, chemically combined is a.... |
Pure substance. |
