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19 Cards in this Set
- Front
- Back
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A change iin the physical appearance, without changing the chemical composition of the substance |
Physical change |
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A change where new matter is formed |
Chemical change |
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What does (l) mean in a chemical equation |
Liquid |
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What does (aq) mean in a chemical equation |
Aqueous Can be dissolved in water |
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What does (g) mean in a chemical equation |
Gas |
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What does (s) mean in a chemical equation |
Solid |
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What is the yield in a chemical equation and what does it mean |
The arrow between the reactant and the product Means creates or to make |
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According to to the law of conservation of mass matter... |
Can neither be created or destroyed |
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After a chemical reaction, the mass of products is...equal to the original mass of reactants |
Always |
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What does it mean to balance a chemical equation |
Equal amounts of atoms on each side of the equation |
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A combustion reaction is always a reaction of hydrocarbon with...,forming ...and... |
Oxygen gas Carbon dioxide and water |
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One element replaces a second element in a compound |
Single replacement reaction |
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2 elements get replaced and produces 2 new compounds and always forms a precipitate |
Double replacement reaction |
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2 or more reactant combine to form a single product |
Synthesis/combination |
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A single compound is the reactant, two or more substances are the products |
Decomposition reaction |
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Evidence of a physical change |
Boil Melt Cut Bend Split Crack Sharpen |
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Evidence of a chemical change (6) |
Production of a gas (bubbles) Production of a precipitate (solid) Production of heat or light energy Change in color ( only of cannot be explained) Change in temperature Loss of metallic luster (shine) |
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Examples of a chemical change (6) |
Rust Burn Decompose Ferment Rot Corrode |
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7 diatomics are |
N2 O2 F2 Cl2 Br2 I2 H2 |
