Matter and Energy
Terms in this set (26)
Anything that occupies space and has mass.
The smallest identifiable unit of an element
Two or more atoms joined in a specific arrangments by chemical bonds
State of Matter
The three forms in which matter can exist: solid, liquid, gas.
A state of matter in which atoms or molecules are packed close to each other in fixed locations.
A state of matter in which atoms or molecules are packed close to each other but are free to move around and by each other.
A change in which matter changes its composition.
A state of matter in which atoms or molecules are widely separated and free to move relative to one another.
A substance composed of two or more different types of atoms or molecules combined in variable proportions.
A substance composed of only one types of atom or molecule.
A substance composed of two or more elements in fixed, definite proportions.
A substance that cannot be broken down into simpler substances.
A mixture, such as salt water, that has the same composition throughout.
A mixture, such as oil and water, that has two or more regions with different compositions.
Those properties that a substance displays without changing its composition.
Properties that a substance can display only through changing its composition.
A change in which matter does not change its composition, even though its appearance might change.
Energy associated with the motion of an object.
Law of Conservation of Energy
Energy can be neither created nor destroyed.
The energy of a body that is associated with its position or the arrangement of its parts.
Fahrenheit (°F) Scale
The temperature scale that is most familiar in the United States; water freezes at 32°F and boils at 212°F.
Celsius (°C) Scale
A temperature scale often used by scientists. On this scale, water freezes at 0°C and boils at 100°C.
Kelvin (K) Scale
The temperature scale that assigns 0 K to the coldest temperature possible, absolute zero (-273°C or -459°F), the temperature at which molecular motion stops.
The quantity of heat energy required to change the temperature of a given amount of a substance by 1°C.
Specific Heat Capacity
The heat capacity of a substance in joules per gram degree Celsius (J/g°C).
the amount of matter in a given space