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27 Cards in this Set
- Front
- Back
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chemistry
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The study of MATTER and how matter changes.
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matter
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Makes up every living and every material thing. Matter takes up SPACE and has MASS
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property
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The CHARACTERISTIC or FEATURE that helps you describe matter.
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quantitative property
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From the word "quantity" - the CHARACTERISTIC or FEATURE described using NUMBERS (ie. the boiling point of water is 100C)
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qualitative property
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From the word "quality" - the CHARACTERISTIC or FEATURE described using WORDS (ie. water is transparent)
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states of matter
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The different FORMS of MATTER (ie. solid, liquid, gas)
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solid
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A state of matter that has a FIXED SHAPE and VOLUME.
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liquid
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A state of matter that is FLUID; it does have a SPECIFIC VOLUME, but has NO SHAPE OF ITS OWN. It takes the shape of its container and forms a surface. (Like the coffee in a cup!)
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gas
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A state of matter that has NO FIXED SHAPE or VOLUME of its own, but it FILLS its container completely, but doesn't make a surface like liquid does (think helium or air in a balloon).
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mass
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The QUANTITY of matter in a solid, liquid or gas. Mass is the amount of something there is, and is measured in grams (or kilograms). YOU have a greater mass than a mouse!
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volume
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The amount of SPACE that an object takes up, or occupies.
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density
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Density is the amount of a substance in a specific area.
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scientific model
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An idea that helps explain some part of the natural world. It might be shown in words, pictures or objects.
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particle model of matter
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All matter is made up of extremely small particles.
The particles are in constant motion; more slowly in a solid, faster in a liquid, and even faster in a gas. |
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physical change
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Matter changing state but still staying the same kind of matter, ie. liquid water changes to ice when it freezes but is still H₂O. Physical change is reversible (ice can become water again).
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chemical change
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Matter changing state at the molecular level and becoming a different kind of matter, ie. wood burns and produces smoke and ash. Chemical change is irreversible (can't change back to original).
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chemical property
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The ability of a material to take part in a chemical change, ie. paper can burn, and that is a chemical property of paper.
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Mixture
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A combination of two or more different types of matter that can be separated by physical changes.
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Heterogeneous
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A mixture that has DIFFERENT parts that keep their own properties and can easily be detected.
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Homogeneous
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A mixture (or pure substance) in which every part of the material is the SAME as every other part.
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Pure substance
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A material that is the SAME throughout and is made up of only ONE type of particle.
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Mechanical mixture
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A mixture made of more than one type of matter, in which the different parts can be easily seen with the unaided eye.
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Suspension
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A heterogeneous mixture in which the particles settle slowly after mixing.
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Emulsion
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A suspension with something added that makes the different parts stay evenly mixed without separating too quickly.
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Solution
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A homogeneous mixture of two or more substances that are COMBINED so that the mixture is the SAME throughout and the PROPERTIES of the SUBSTANCES BLEND.
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Solute
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A substance that can be dissolved in a solvent, to make a solution.
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Solvent
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A substance INTO WHICH a solute will dissolve to make a solution.
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