chemistry test 1

basic unit of mass

basic unit of length

anything that has mass and takes up space

a generalized statement about observations that summarizes experimental facts about nature

the non place holding digits in a reported measurement

a state of matter that has no shape and a definite volume

no definite volume or shape

definite shape and volume

subatomic particle with no charge found in the nucleus of an atom

a representation of a chemical compound

a ratio of two equivalent quantities using different units

properties that can be used to identify a substance and distinguish it from other substances

a mixture whose properties vary throughout

mixture whose properties are uniform throughout

the sum of the number of neutrons and protons in an atom is

the basic unity of ionic compounds and the smallest neutral collection of ions

CaCl2

ionic compounds that contain metal atoms that can form sever cations

on the periodic table, the last group o the right is called the

on the periodic table group 1A is

group 2A

group second from the right

charged particles that form when an atom either gains or loses electrons

those characteristic properties of a substance that relate to changes in the comp of the substance or to its reaction with other substances

how close a set of measurements are to the true value

how close a set of measurements are to eachother

in scientific notation the ___ shows how many spaces the decimal place has been moved to produce the final coefficient

the physical property __ is defined as the mass per unit volume

an explanation for observations that withstands peer review

SO3

what is the formula for diboron tetrachloride

what is the ionic formula formed for the compound formed by barium and chlorine

a good hypothesis should be ___ which means that further testing could prove it wrong

the temperature scale where freezing point of water is 32degrees and the boiling point is 212

the measure of intensity of energy of the particles in a substance

the energy needed to raise 1 gram of water 1 degree celcius

the amount of heat needed to raise one gram of a substance by 1degree celcius

the atomic number tells you the number of

a negatively charged ion is an

a unit of mass that in one twelfth of the mass of carbon 12 atom

the vertical rows on the periodic table

the horizontal rows on the periodic table

atoms of a particular element that have different masses due to having different numbers of electrons

avagadros number of unit particles

on the periodic table the elements along the stair step are

the weighted average of the isotopes of an element