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Ruggiero Chapter 8
Vocab words
| Term | Definition |
|---|---|
| Reactant | A starting substance in a reaction. For example: baking soda and vinegar (reactants) = water and carbon dioxide and sodium acetate(products). |
| Product | A new substance resulting from a chemical reaction. For example: baking soda and vinegar (reactants) = water and carbon dioxide and sodium acetate(products). |
| Chemical reaction | A change or reaction that creates a new kind of matter (product) with different properties from the original matter (reactant). Wood (reactant) that burns makes charcoal (product). |
| Reactivity | The ability of elements to take part in chemical reactions. Metals have high reactivity. Iron and oxygen creates rust. |
| Precipitate | The solid product of a chemical reaction in a solution. Try adding lemon to a little bit of cream and see what happens. |
| Metal | A substance that conducts heat and electricity |
| Conductivity | The degree to which heat or electricity flows through an object |
| Insulator | Something that resists the flow of energy, such as heat |
| superconductor | A material that loses all resistance to electrical flow at super low temps |
| Malleable | Capable of being rolled or pounded. Take a piece of aluminum foil and crunch it up = malleable! |
| ductile | Capable of being drawn out into wire or thread |
| corrosion | A gradual weakening and wearing away of something due to a chemical reaction. |
| alloy | A mixture of two or more elements usually metals, such as brass, bronze, steel, or stainless steel. |
| salt | A compound made of a metal and a nonmetal. A white substance that is found in sea water and in the Earth. |
| acid | A substance that tastes sour, sharp, or biting. Litmus paper turns RED. |
| indicator | Something that changes color in ways to let you identify a substance. Litmus paper is an indicator. Try boiling purple cabbage and use the juice to test different household products. Cabbage juice is the indicator. |
| base | Tastes bitter. Litmus paper turns green. It reacts with an acid to form salt. Soap is a base. |
| neutralization reaction | The reaction that occurs when an acid and a base react to form water and salt. Think antacids or alka-seltzer to reduce the acid in the stomach. |
| acidity | Strength of an acidic reaction. |
| alkalinity | Strength of a base solution. |
| pH scale | The scale that measures the amount of acid or base solution. It measures the amount of charged hydrogen particles. |
Created by:
sbarone
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