Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Chemical Reactions
| Term | Definition |
|---|---|
| Activation Energy | What is needed to start a chemical reaction. |
| Arrow(-->) | You read the arrow as "yields" in a chemical equation formula. |
| Characteristics of a Chemical Reaction | Changes in energy or change in properties. Examples bubbles burning etc. |
| Chemical Change | Alter the chemical properties of matter; new substances with new properties are formed. |
| Chemical Equations | A shorter and easier way to show chemical reactions by using symbols instead words. |
| Coefficient | A number placed in front of a chemical formula in an equation. Tells you how many atoms or molecules of each reactant must equal the total mass of the products. |
| Conservation of mass | The amount of matter involved in a chemical reaction does not change. The total mass of the reactants must equal the total mass of the products. |
| Controlling rates of reaction | concentration, temperatures, surface area, catalysts, enzymes inhibitors |
| Decomposition Reaction | A compound breaks down into simpler substances. |
| Endothermic Reactions | An observable change in energy that shows a chemical reaction took place; A reaction that takes heat from the solution, absorbs energy, makes it feel cooler. |
| Exothermic Reaction | An observable change in energy that shows a chemical reaction took place; that releases heat ; gives off energy, makes it feel warmer most chemical. |
| Physical Changes | Alter only the physical properties of matter; no new substance are formed. Can be a change in size shape or color; change in phase. |
| Precipitate | A solid that forms from solutions during a chemical reaction; observable change that shows a chemical reaction took place. |
| Products | The material you have after a chemical reaction; written on the right side of the formula. |
| Reactants | The materials you have at the beginning of a chemical reaction; written on the left side of the formula. |
| Replacement Reaction: | One part of a compound is displaced by an element or compound from another substance (also called displacement reaction) |
| States of Matter (pp. 46-50): | solid, liquid, and gas |
| Subscripts: show the number of atoms of an element in a molecule or the ratio of elements in a compound. | Show the number of atoms of an element in a molecule or the ratio of elements in a compound. |
| Synthesis Reaction: | Two substances combine to form a new compound (also called composition reaction) |
Created by:
150012516
Popular Chemistry sets