Unit 1 Quiz

A safety sheet for all sold chemicals and substances.

Anything made of atoms

used in a chemical reaction to detect, measure, or make other substances.

A testable statement or question.

representation of a system of ideas, events or processes

a distinct set of concepts or thought patterns, including theories, research methods, postulates, and standards for what constitute legitimate contributions to a field

Helps to verify experiments. When someone reviews a paper, experiment, etc., to verify it.

the ability of an experiment to be done again by another individual

when you see a pattern thats NOT there

When you DONT see a pattern that IS there

small amount of variation, easy to check. low accuracy, high precision.

when every measurement is off. this affects accuracy. high accuracy, low precision.

how close measurements are to eachother

how close measurements are to the true value.

SI/1000

SI/100

SI/10

SI x 10

SI x 100

SI x 1000

SI x 100000

SI unit of length

SI unit of mass

unit for volume. equivalent of 1,000mL

cubic centimeter, equivalent to mL

SI unit of thermodynamic temperature

temp scale based on 0 degrees for the freezing point of water and 100 degrees for the boiling point of water.

temp. 32 degrees is the freezing point of water and 212 degrees is the boiling point.

used to measure atoms

the digits of value which carry meaning towards the resolution of the measurement

quantitative or qualitative

a number with an infinite number of sig figs

do not contain variables and instead include a number and a unit on both sides of an equal sign

a factor used to change from one unit of measurement to another

the mass of a unit of volume of a substance.

d = M/V

The upward force exerted by a liquid on an object immersed in it

quantity representing the amount of matter in a particle or object.

How much space an object or substance takes up

V = M/d

positive charge

no charge

negative charge

center of atom. no charge

the number of protons. gives atoms their identity.

protons + neutrons. number explicitly shown on isotopes.

found by multiplying the abundance of an isotope of an element by the atomic mass of the element and then adding the results together. EX: Carbon-12: 0.9889 x 12.0000 = 11.8668; Carbon-13: 0.0111 x 13.0034 = 0.1443.

sum of all atomic weights

can be positive, negative, or neutral. protons - electrons.

a different form of the same element. EX: carbon 12 and carbon 13

The smallest part of a substance that cannot be broken down chemically

an atom or group of atoms that has an electric charge

The smallest particle of a substance that has all of the physical and chemical properties of that substance

the chemical formula of a compound that gives the proportions (ratios) of the elements present in the compound but not the actual numbers or arrangement of atoms.

1. a formula giving the number of atoms of each of the elements present in one molecule of a specific compound.

the radius of an atom. distance between an atoms nucleus and outer electron shell.

the level of reactivity of a metal.

the tendency of an atom or a functional group to attract electrons toward itself.

gets greater towards He, lower towards Fr

the energy needed to remove the outermost electron from a neutral atom

high towards He, low towards Fr