Question | Answer |
Cannot be poured: Solid/Liquid/Gas | Solid |
Particles are not stuck together at all: Solid/Liquid/Gas | Gas |
Movement of a gas that fills an area | Diffusion |
Changing of state from a solid to a liquid | Melting |
Changing of state from a gas to a liquid | Condensation |
Changing of state from a solid to a gas | Sublimation |
Changing of state from a gas to a solid | Deposition |
Changing of state from a liquid to a gas | Evaporation |
No new substance is formed: physical or chemical change? | Physical |
Chewing food: physical or chemical change? | Chemical |
Melting candle wax: physical or chemical change? | Physical |
Reaction where heat is absorbed and temperature decreases | Endothermic reaction |
Reaction where heat is given out and temperature increases | Exothermic reaction |
Ammonium Chloride and what other SOLID make an excellent endothermic reaction? | Barium Hydroxide |
When magnesium reacts with oxygen what evidence is there of a chemical change? | White light given off |
When Hydrogen burns what evidence is there of a chemical change? | Loud pop/bang |
When a glowing stick is placed in pure oxygen what happens? | It relights |
What is the formula for Hydrogen Peroxide? | H2O2 |
What is the formula for Hydrochloric Acid? | HCl |
What is the formula for Magnesium Chloride? | MgCl2 |
The formula for density is: | Mass/Volume |
The units for density for a liquid are: | g/ml |
The units for density for a solid are usually: | g/cm3 |
The density of pure water is: | 1g/ml |
The density of a substance is 7.28g/cm3 so it will sink or float in water? | |