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WorksheetsUnit 1 & 2 Vocab- Chem Honors
Total questions: 27
Worksheet time: 14mins
Scientific Notation
3,560,000 is expressed as 3.56 × 106
greater than 10
less than 10
not here
Meter
a large volume of something
length(base unit)
time
a metric unit of length equal to 1000 meters
Second
temperature(k)
time (s)
mass(k)
volume(L)
Gram
length(m)
temperature(k)
mass (g)
Liter
time(s)
volume(L)
temp(k)
mass(g)
Volume
the reproducibly of a given measurement
the amount of space occupied by an object
Mass
anything that takes up space and can be weighed
the measure of the amount of matter in a body(kg)
Accuracy
the measurement of how tightly a material is packed together
from combinations of the fundamental units
closeness to the true value of measurement
Precison
the reproduciblity of a given measurement
closeness to the true value of a given measurement
Matter
the force exerted on a body by gravity
the measure of the amount of matter in a body
anything that takes up space and can be weighed
Pure Substance
an element or compound that consist of only one type of particle (fixed)
a physical combination of two or more pure substances in which each substance retains its own chemical identity
Element
simplest form of matter that can exist under normal conditions
2 or more elements chemically combined
Compound
2 or more elements chemically combined
substances that can be separated into smaller substances ONLY by chemical rxns
simplest form of matter
Heterogeneous mixture
has a variable composition; remain physically separate (ex: chocolate chip cookies, soda with ice, a sandwich)
has complete uniform composition; two or more substances that are evenly distributed with each other (ex: Water, Air, Steel, Detergent, Saltwater mixture)
Homogeneous mixture
has complete uniform composition; two or more substances that are evenly distributed with each other (ex: Water, Air, Steel, Detergent, Saltwater mixture)
has a variable composition; remain physically separate (ex: chocolate chip cookies, soda with ice, a sandwich)
Potential energy
stored energy; energy of position
energy sunlight
energy of an object in motion
not here
Kinetic energy
sunlight energy
stored energy
energy of a object in motion
Endothermic
process that absorbs heat
process that releases heat
Exothermic
process that absorbs heat
process that releases heat
Density
the amount of space occupied by an object
always reported with temp at which measured because volume changes slight with temp
Physical property
not here
alters substance w/o changing its composition or identity
can be observed or measured without altering the identity of the substance
Physical change
changes that do alter the identity & characteristics of a substance (ex: burning wood, iron rusting, milk souring, digesting food)
alters substance w/o changing its composition or identity (ex: cutting wire, tearing paper, dissolving, freezing water)
Chemical Property
a characteristic of a substance that can be studied only at a risk of changing the identity of the substance
Chemical Change
changes that do alter the identity & characteristics of a substance (ex: burning wood, iron rusting, milk souring, digesting food)
alters substance w/o changing its composition or identity (ex: cutting wire, tearing paper, dissolving, freezing water)
Solid
definite shape and volume
no definite shape
definite volume no definite shape
Liquid
no definite shape or volume
definite volume no definite shape(flows freely)
packed tightly together
Gas
definite volume no definite shape
no definite shape or volume
definite shape and volume
