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andrew_johnstone
on FreezingBlue Flashcards.
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Matter
- anything that takes up space and has mass
- basically, everything
- composed mostly of atoms
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pure substances
- substances with one kind of particle
- elements and compounds
- eg. gold, distilled water
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mixture
- a mix of multiple pure substances
- solutions and mechanical mixtures
- eg. salt water, chocolate chip cookie
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element
- a material made from one kind of atom
- eg. gold, hydrogen, lead, NOT water
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compound
- a chemical combination of multiple elements that cannot be physically separated.
- eg. water, CO2, alcohol
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physical property
- a property of a substance you can measure or see without changing the substance
- eg. colour, texture, density
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viscosity
- a physical property
- used to measure the thickness of a liquid
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melting point
- the temperature at which a substance melts or freezes
- Water: 0
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boiling point
the temperature at which a substance turns into a gas(boils) or into a liquid (condenses)
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solubility
- the ability of a substance to dissolve in another substance to create a solution
- measured in time
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density
- the weight of an object per a measurement of volume
- Density=Mass/volume
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chemical property
- a property of a substance that does not change and can only be measured by changing the substance
- eg. reactivity, stability
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combustibility
the ability for a substance to go on fire by reacting with oxygen and releasing carbon
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stability
- the ability of a substance to go unchanged
- unstable usually means dangerous
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toxicity
- the ability of a substance to poison biological life
- toxic eg. DDT, mercury
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