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... the science that seeks to understand what matter does by studying what atoms and molecules do
In an experiment, the standard that is used for comparison
A logical, systematic approach to the solution of a scientific problem
anything that can be measured and that can vary, something a researcher measures or manipulates
a testable prediction, often implied by a theory.
a hypothesis that has been tested with a significant amount of data
A statement that summarizes or describes the observations about our world and experiments
any substance that occupies space and has mass.
A pattern, plan, representation, or description designed to show the structure or workings of an object, system, or concept
A measure of the amount of matter in an object (m= D*v)
A characteristic of a pure substance that describes its ability to change into different substances
A characteristic of a pure substance that can be observed without changing it into another substance
A change that occurs when one or more substances change into entirely new substances with different properties.
A change in a substance that does not involve a change in the identity of the substance
a physical property such as boiling point, density, or color that does NOT change when you change the size of an object.
a physical property such as mass that changes when you change the size of an object
A pure substance composed of two or more elements in fixed definite proportions. This can be broken down into simpler substances
A _______ is a combination of two or more substances that do not change chemically when you mix them.
2 Hydrogen atoms bonded together is a _______
A sample of matter, either a single element or a single compound, that has definite chemical and physical properties
A column in the periodic table
A column on the periodic table
_______ + nonmetal is an example of an ionic bond
a bond formed between and metal and a _______ is generally classified as ionic. an example of this would be the bond formed between lithium and flourine.
A homogeneous mixture of two or more substances
A _______ is a substance that can dissolve other substances.
A _______ is a substance that dissolves in a solvent to make a solution.
A mixture in which all the individual substances are evenly mixed throughout.
differing in kind; dissimilar; varied
A chemical reaction that absorbs heat
A chemical reaction that releases energy
An international system of measurement based on multiples of ten. Also called International System.
_______ is used to represent a very large or very small number as a power of 10
A description of how close a measurement is to the true value of the quantity measured.
closeness to a set of measurements of the same quantity madeht same way
a fraction used to convert from one unit to another
A measure of the gravitational force exerted on an object.
A technique of problem-solving that uses the units that are part of a measurement to help solve the problem
A measure of space (lwh)
Doubt, the state of being unsure
All the digits that can be known precisely in a measurement, plus a last estimated digit
The absolute value of the error divided by the accepted value, multiplied by 100%
? T :: ? collisions :: ? rate of reaction
A unit defined by a combination of base units
measuring the quantity of something
measuring the quality of something