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Chemical Reaction


Reactants substances present at the beginning of a chemical reaction
Products what happens; products come from a reaction
Exothermic When the temperature of a chemical reaction increases
Endothermic When the temperature of a chemical reaction decreases
Law of Conservation Matter cannot be created or destroyed, but it can change forms
Mixture a combination of two or more substances
Solution a mixture in which a substance dissolves evenly in another substance
Dissolve get smaller and smaller until the substance is invisible
Solute the substance that dissolves
Solvent part of a substance that dissolves the solute, usually has more volume
Natural a product from plants, animals or earth
Synthetic made by people; natural resources changed chemically
Are atoms created or destroyed in a chemical reaction? Atoms are not created/destroyed. No new atoms are created/destroyed. They are rearranged into different compounds. In chemical reactions, reactants contact each other, bonds are broken/formed , atoms are rearranged to form new bonds to make products.
Describe how atoms get rearranged in a chemical reaction. Atoms are not created or destroyed in a chemical reaction. Instead, they are rearranged. For example when a candle is burned, it seems as though the candle slowly disappears over time however this is not the case.
Explain the law of conservation of mass. In a closed or isolated system, matter cannot be created or destroyed. It can change forms.
Describe the difference between mixtures and solutions. Give examples for each. A mixture is two or more substances that do not chemically combine like cereal. A solution is a mixture where one substance is dissolved in the other.
What are the positive and negative impacts of using natural and synthetic products. Synthetic-taste good but uses too much waste. Natural tastes good and has nutrients, but it uses too much energy.
Created by: jschwartzman