A (a)   change is one that results in a change of composition; the original substance no longer exist

(a)   is a tentative explanation of observation.

(a)   is the procedure to test a hypothesis

List the si units in order (smallest to largest)--comma between each

(a)  

(a)   measure one variable at a time (hypothesis are revised if results do not match).

A (a)   is a fraction in which the same quantity is express one way in the numerator and another wau in the denominator (creates an equality statement between two units)

(a)   is a measure of the amount of matter in an object or sample

(a)   is used to express the masses of atoms and other similar sized objects

______/ _____ are a set of conceptual assumptions that explains data from accumulated experiments; predicts related phenomena.

(a)  

Testing predicts based on the model and revising if results dont match is called (a)  

(a)   do not conform to their containers shape

Particles in solids are _______ ___ in an orderly fashion.

(a)  

(a)   conform to containers shape.

Liquids particles and close together but ___ ____ in their position.

(a)  

(a)   assume both the shape and volume of their container.

(a)   is anything that has mass and occupies space.

(a)   are natural phenomena and measured events ; if universally consistent it can be considered a law

If an observation is universally true it is considered (a)   .

Gass particles have significant ______ and move _____.

(a)  

We (a)   convert a substance from one state to another without changing its identity

(a)   smallest indivisible unit for an enment

(a)   a chemical compound always contains the same elements in the same proportions by mass

(a)   can be separated by physical means into its components without changing the identities of the components

Chemists classify matter as either a _____ or a _______ of substances

(a)  

(a)   is a form of matter that has definite composition and distinct properties

Pure substances that are comprised of 2+ are called (a)  

(a)   may be broken down by chemical changes to yield either elements or other compounds, or both.

Pure substances that cannot be broken down into simpler substances by chemical changes are called (a)  

(a)   consist of two or more atoms joined by chemical bonds

(a)   is a physical combination of two or more substances.

A (a)   is uniform throughout

Homogeneous mixtures are also known as (a)  

(a)   is a property that can be observed and measured without changing the identity of the substance

(a)   cannot be subdivided by chemical or physical changes

A (a)   change is one in which the state of matter changes but the identity of the matter does not change

(a)   numbers are found by methods other than counting

(a)   tells how close a measurement is to the true value

(a)   tells us how to close a series of replicate measurements are to one another

In sig figs (a)   nonzero numbers and significant

Sig Figs with decimal:

count first non zero from the (a)   -

Sig Fig Without decimal:

Count first non zero from (a)  

Sig fig Multiplication and division :

answer should have the same number of decimal places as the
(a)  

A (a)   property is one a substance exhibits as it interacts with another substance.

(a)   properties depend on the amount of matter present

(a)   numbers are defined by values

(a)   is the ratio of volume to mass (m/v)

Sig fig addition and subtraction:

add or subtract the non decimal values and then cut off at the (a)   decimal amount