Master this deck with 37 terms through effective study methods.
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Particles are close together in a regular pattern and a fixed shape vibrating o the spot. (highest density)
Particles are close but not in a regular pattern, spread to take the shape of container, allowing them to slide over each other. (medium density)
Gases have widely spread particles that move freely and can be compressed.(lowest density)
A substance can dissolve in a solvent.
It will not dissolve in a solvent.
A mixture of a solute and a solvent that is clear and evenly distributed.
A solute breaks down into tiny particles and mixes evenly with a solvent.
It measures how much solute can dissolve in a solvent.
A solvent cannot dissolve any more solute.
Crystallisation involves evaporating water to leave salt crystals.
It separates substances based on different boiling points. the water will evaporate then be condensed back by the condenser
To separate coloured substances in a mixture based on solubility. The more soluble inks will travel further up the paper. pure substances will have regions if same colour.
They are insoluble in water and won't move up the paper. Use acetone or ethanol if using permanent markers as they are soluble in them.
A method to separate insoluble solids from liquids. Filtration wouldn't work to separate soluble solids as they would just go through the filter paper with the water
A pure substance made of only one type of atom.
Compounds are chemically bonded atoms , while mixtures are not.
New substances are formed through the rearrangement of atoms.
Change in color , temperature change, production of sounds, chang tin smell, emission of light or production of gas.
The starting substances in a chemical reaction. The substances formed in a reaction.
Mass is neither created nor destroyed in a chemical reaction.
Heat energy is either released or absorbed.
They release heat and increase temperature.
A substance gains oxygen, often increasing its mass.
A reaction where a fuel burns in oxygen to release heat and light energy.
Mass decreases as gases escape during the breakdown of a compound.
Independent is changed, dependent is measured, and control is kept constant.
Oxygen, fuel, and heat are needed for combustion.
Substance has just changed form or state , no new substance is produced
They absorb heat and decrease in temperature
Sodium + Oxygen --> Sodium Oxide (solid) Carbon + Oxygen --> Carbon Dioxide (gas)
A substance made of only hydrogen and carbon
Hydrocarbon + Oxygen--> water + Carbon Dioxide
When water is present
In the presence of carbon dioxide
20.95%
A endothermic reaction where a compound breaks down into more simper substances
Copper carbonat + oxygen --> Copper oxide + carbon dioxide Zinc Carbonate + oxygen --> zinc oxide + carbon dioxide