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Science Mid-Term Exam
Terms in this set (68)
Anything that has mass and takes up space
The amount of space that matter occupies
The measurement of how much matter it contains
The measurement of how much mass is contained in a given volume.
The property of an object to remain at constant velocity unless acted upon by an outside force
The resistance of a liquid to flow
A measure of the force of gravity on an object
The force of its outward push divided by flows from the area of high pressure to an area of low pressure
The best mixed of all possible mixtures
The smaller percent of the solution and is what is being dissolved chemicals
The larger percent of the solution and is what does the dissolving
A measure of how well a solute can dissolve in a solvent at a given temperature
A mixture in which different materials can be distinguished easily
A mixture with evenly divided amount of elements in it
Is a substance made up of two or more elements that are chemically combined
Consists of two or more substances that are in the same place but are not chemically combined
A solid that forms from a solution in a chemical reaction
Some pure substances cannot be broken down into other substances by any physical or chemical means
The smallest particle of an element
Is a mixture in which particles can be seen and easily separated by settling or filtration
Has only a little solute dissolved in the solvent
Has more solute dissolved in the solvent
When a solution can not dissolve any more solute
If you can continue to dissolve more solute into a solution
If you increase the temperature of a saturated solution it will allow it to dissolve more solute
Eat away or break down
Litmus and pH paper, Indicates weather it is a acid or base
Bases do react with acids
Regular repeating internal pattern
Molecules arranged randomly, that can be bent or moved
Characteristics to Describe Matter
Can Matter Change Properties?
The 3 main properties of matter.
Solids, Liquids, and Gases
Properties of a substance that never change
Temperature at which a liquid boils. 100 Celsius.
The temperature at which a liquid melts or freezes. Liquid melts if it is frozen and it freezes if it is a liquid. 0 Celsius.
When physical characteristics of the material change but the composition does not
Changes in the chemical identity of matter, a new chemical exists after the change
Elements and compounds
Mixtures that are the best mixed
What is used to Measure Mass
Grams or Kilograms
What is used to Measure Volume
Length x Width x Height (cm to the third, liters, or milliliters)
What is used to Measure Density
Mass divided by volume
The relation between volume and temp. -- ++
The relation between volume and pressure at a constant temp. -+ +-
The Law of Conversation of Mass
the law that states that mass cannot be created or destroyed
One of the 3 states of matter. Definite shape and volume.
One of the 3 states of matter. Definite volume but not shape.
One of the 3 states of matter. No definite volume or shape.
A solid that is made up of crystals in which particles are arranged in a regular, repeating pattern
A measure of alkalinity or acidity.
pH level of 0-2
pH level of 12-14
pH level of 7
pH level of 5-6
pH level of 8-9
A property that describes how matter is the same. Mass, density, weight, volume.
A property that describes how matter is different. .color, size, odor, texture, taste, luster.
Any substance that forms hydrogen ions (H+) in water
any substance that produces hydroxide ions in water
Effects of Solutes on Boiling/Freezing Points
Raise the boiling points and lower the freezing points
Is melting/freezing point a chemical or physical property?
Solid to Liquid
Liquid to solid
Solid to Gas
Gas to Solid
Liquid to gas
Gas to Liquid
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