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
Year 10 Chem HB
| Question | Answer |
|---|---|
| What is the maximum amount of electrons in the first shell | 2 |
| What is the maximum amount of atoms in the second shell | 8 |
| What are valence electrons | valence electrons are the electrons in the outer shell. It is the same number as the group they are in. |
| Is the group number the number of electrons in the outer shell | YES |
| Is the period or row number the same as the amount of shells | YES |
| What are the energy levels | The energy levels are the horizontal rows on the periodic table |
| What is the most reactive metallic atom | Francium |
| What is a combination reaction | Two reactants combine to form one product A + B --> AB |
| Decomposition | When one reactant decomposes to form 2 or more products AB --> A+B |
| Single replacement | One substance replaces another in a compound AB+C --> AC+B |
| Double displacement | Two substances are displaced AB+CD --> AD+BC |
| Combustion | When a substance reacts with oxygen to produce carbon dioxide or water |
| What is the general form of an equation | Reactant --> Products |
| Do you use subscripts to balance an equation | NO |
| What is used to balance chemical equations | Coefficients |
| Define Element | Atoms os the same type |
| Define Molecule | 2 or more atoms of the same type joined together of same type |
| Define compound | A group of different atoms joined together |
| Whats is a formular | It is the number of atoms of each type in a compound |
| What are the symbols for: Aluminium | Al |
| Flourine | F |
| mercury | Hg |
| Sodium | Na |
| Copper | Cu |
| silver | Ag |
| Name the following: Sn | Tin |
| Na | Sodium |
| Cl | Chlorine |
| K | Pottasium |
| Pb | Lead |
| Fe | Iron |
| What is a chemical reaction | re arrangement of atoms to form new substances |
| What is a chemical equation | The representation of reactants and products |
| What is an ionic substance | between metal and non metal, form salts |
| Solute | Substance dissolved in solvent |
| Solvent | Substance that dissolves the solute |
| Solubility | A certain amount of a particular substance that can dissolve in a given volume of water |
| Solution | A mix of dissolved solute in solvent |
| What is the rate of reaction | How fast or slow a reaction is |
| What are the factors effecting the rate of reaction | 1. Concentration - Increases number of collisions 2. Temperature - Increases energy of particles, collide more often 3. Surface area - more area for collisions to occur 4. Catalyst - reduces amount of energy needed in collisions |
| Independent variable | The variable that stays the same. Variable changed on purpose |
Created by:
118805
Popular Chemistry sets