intro to chem
Terms
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- the closeness of a measurement to the answer
- acuracy
- the quantity of required to raise the temp of 1g of water to 1 degree
- calorie
- a materials mass devided by its volume or its mass per unit volume
- density
- 2 variables that have a constant ratio
- directly perportional
- the some of the kinetic energies of the particals in a sample of matter
- heat
- the amount of heat energy raised to raise the temp. of a given sample of matter by 1 degree c
- heat capacity
- the si unit of heat energy and all forms of energy
- joules
- the si standard unit for mass
- kilogram
- 2 variables that have a consistent mathimatical product
- inversly proportional
- meter
- the si standard unit for length
- the amt. of heat energy to raise the temp of 1g of a substance 1 degree c
- specific heat
- a measure of average kinetic energy of the particals in a sample of matter
- temperature
- changes between gaseous, liquid, or solid state
- change of state
- any change or reaction in which 1 or more substances are converted into different substances
- chemical change/reaction
- the ability of a substance to undergo a change that alters its identity
- chemical property
- a substance that cannot be sererater by other substances by ordinary chemical change
- element
- describes process to absorb heat
- endothermic energy
- describes the processes that release heat
- exothermic energy
- the vertical columns of elements in the periodic table, numbered consecutively from 1 to 8
- groups/families
- the energy of an objest in motion
- kinetic energy
- a chemical compound that contains the same elements in exactly the same proportions by mass, reguardless of size
- law of definite comp.
- a state of any matter that has neither a definite shape nor definite volume
- gaseoes state
- that state of any matter that has a definite volume, but an indefinite shape
- liquid state
- the measure of the quantity of matter
- mass
- anything that has mass or occupies space
- matter
- an element that has properties and characteristics of metals and other characteristics of non metals, and is a semiconductor
- metaloid
- a combination of 2 or more kinds of matter, each of which retains its own composition or properties
- mixture
- the horizontal rows of elements in the periodic table, numbered 1 to 7 from top to bottom
- period
- a property that can be observed or measured, without altering the identity of material
- physical property
- a solid that serarates from a solution
- percipitate
- the new substance or substances produced by a chemical enzyme reaction
- products
- energy that an object has because of its position or compostion
- potential energy
- the substances that undergo a chemical reaction
- reactants
- the state of any matter that has definite shape and volume
- solid state
- a homogenious mixture of 2 or more substances in a single phase
- solution
- a measure of the earthes gravitational attraction for matter
- weight
- a unit of absoulte temerature
- kelvin
- a metric unit of volume typically used for fluids
- liter