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
Chemistry
Section 1 (Particles and Mixtures)
| Question | Answer |
|---|---|
| Does diffusion occur faster in hot or cold water? | Hot, as they have more kinetic energy |
| What is a graph of solubility vs temperature known as? | A solubility curve |
| What is meant by the solubility of a substance? | The ability of a substance to dissolve in a substance |
| Are particles of ammonia or particles of hydrogen chloride larger? | Hydrogen chloride |
| Particle theory assumes all matter is made of _______, solid, and _________ spheres | small, inelastic |
| What colour is potassium manganate(VII)? (What we use to show diffusion) | Purple |
| If a gas is heated within a fixed container, the volume is fixed, meaning what will have to increase? | The pressure |
| What colour is bromine gas? | Brown |
| In the ammonia and hydrogen chloride experiment, will the ring of ammonium chloride form closer to the wool soaked in HCl or NH3? | Hydrochloric acid (HCl) |
| What does the term dilution mean? | Making a solution more dilute (e.g. adding more water in the potassium manganate experiment) |
| Which particle determines what element an atom is? | Protons |
| What do we call an atom that has a positive or negative charge? | An ion |
| What is an isotope? | Atoms with the same atomic number, but different mass numbers OR Atoms with the same number of protons, but different numbers of neutrons |
| An atom has 13 protons and 14 neutrons. What is its mass number? | 27 |
| What is a compound? | A substance made from two or more different elements that are chemically bonded together |
| What is the definition of a mixture? | A combination of two or more substances NOT chemically combined |
| What is filtration used to separate? | An insoluble solid from a liquid |
| What is crystallisation used to separate? | A soluble solid from a solution |
| When trying to obtain crystals from a solution, what method do we have to use if the solid is susceptible to thermal decomposition? | Crystallisation instead of evaporation |
| What is paper chromatography used to separate? | Different dyes in an ink |
| How do we find the Rf value in paper chromatography? | Distance travelled by substance/distance travelled by solvent |
| In paper chromatography, why should we use pencil for the baseline rather than pen? | Pen ink would dissolve in the solvent and move up the paper |
| Should the baseline be submerged in the solvent in paper chromatography? | No |
| What are 2 solvents commonly used in chromatography? | 1. Water 2. Ethanol |
| What is the name of the resulting paper we end up with in paper chromatography? | A chromatogram |
Created by:
JoeMather
Popular Chemistry sets