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34 Cards in this Set
- Front
- Back
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Matter?
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Matter is defined by its characteristics. It takes up space and its has mass.
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Mass?
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Mass is a measure of the amount of matter in an object.
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Weight?
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Weight is the measure of the earth's pull of gravity on an object.
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Volume?
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Volume is the amount of cubic space that an object occupies.
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Density?
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Density is the mass of a substance contained per unit of volume. Density is stated in grams per cubic centimeter (g/cm3) where the gram is the standard unit of mass. To find an object's density, you must measure its mass and its volume. Then divide the mass by the volume (D = m/V).
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Specific gravity?
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Specific gravity is the ratio of the density of a substance to the density of water.
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Physical change?
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Physical change is a change that does not produce a new substance.
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Chemical change?
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Chemical change is any change of a substance into one or more other substances.
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Conductivity?
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Substances can have two variables of conducttivity: conductor or insulator.
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Conductor?
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Conductor is a material through which electric charges can easily flow.
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Insulator?
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Insulator is a material through which electric charges do not move easily, if at all.
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Solubility?
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Solubility is defined as the amount of substance (referred to as solute) that will dissolve into another substance, called the solvent. The process is called solvation.
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Melting point?
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Melting point refers to the temperature at which a solid becomes a liquid.
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Boiling point?
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Boiling point refers to the temperature at which a liquid becomes a gas.
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Hardness?
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Hardness describes how difficult it is to scratch or indent a substance.
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Metals?
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Metals are giant structures of atoms held together by metallic bonds. Metals tend to have high melting and boiling points because of the strength of the metallic bond.
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is defined by its characteristics: It takes up space and it has mass.
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Matter
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is a measure of the amount of matter in an object.
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Mass
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is the measure of the earth’s pull of gravity on an object.
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Weight
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is the amount of cubic space that an object occupies.
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Volume
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is the mass of a substance contained per unit of volume.
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Density
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=m/V
mass/Volume |
D
Density |
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is the ratio of the density of a substance to the density of water.
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Specific gravity
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_________ properties and _________ properties of matter describe the appearance
or behavior of a substance. |
Physical; chemical
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A _________ can be observed without
changing the identity of a substance. For instance, you can describe the color, mass, shape, and volume of a book. |
physical property
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describe the ability of
a substance to be changed into new substances. Baking powder goes through a chemical change as it changes into carbon dioxide gas during the baking process. |
Chemical properties
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A _________ is a change that does not produce a new substance. The freezing and melting of water is an example
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physical change
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A _________ is any change of a
substance into one or more other substances. Burning materials turn into smoke; a seltzer tablet fizzes into gas bubbles. |
chemical change (or chemical reaction)
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Materials through which
electric charges can easily flow are called electrical |
conductors.
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An _________ is a material through which electric charges do not move easily, if at
all. Examples: the nonmetal elements of the periodic table. |
insulator
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is defined as the amount of substance (referred to as _______) that will dissolve into another substance, called the _______.
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Solubility; solute; solvent
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refers to the temperature at which a solid becomes a liquid. It takes place when there is sufficient energy available to break the intermolecular forces that hold molecules together in a solid.
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Melting point
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refers to the temperature at which a liquid becomes a gas. It occurs when there is
enough energy available to break the intermolecular forces holding molecules together as a liquid. |
Boiling point
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Everything in our world is made up of ________, whether it is a rock, a building, an animal, or a person.
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matter
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