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Chapter 2 Section 1 Classifying Matter

Terms in this set (34)

Matter
anything that has both mass and volume
mass
consists of all particles that make up an object
volume
how much space the object occupies
mass and volume
What two properties does all matter have?
Chemistry
the branch of science that studies matter and its changes
chemistry
Almost everything that you use in daily life involves ____.
element
Every sample of matter is either an ____, a compound, or a mixture.
compound
Every sample of matter is either an element, a ____, or a mixture.
mixture
Every sample of matter is either an element, a compound, or a ____.
Gold and Oxygen
examples of elements
Water and Sugar
examples of compounds
Vinegar and Brass
examples of mixtures
element
a substance that cannot be separated or broken down into simpler substances.
one
An element is made of only ____ kind of atom.
atom
An ____ is the smallest unit of an element that has the chemical properties of that element.
molecule
a combination of two or more atoms that are combined in a definite ratio
Molecules are made up of atoms
How are atoms and molecules related?
symbol
Each element is represented by a one- or two-letter ____ which is either a single capital letter or a capital letter and a lowercase letter.
compound
a substance made up of atoms of different elements that are chemically combined
H2O2 - Hydrogen Peroxide has 2:2 ratio H20 - water is 2:1
A particular molecule has two hydrogen atoms and two oxygen atoms. How do you know that this is not a molecule of water?
different
The properties of the compound are ____ from the properties of the elements that make up the compound.
chemical formula
shows how many atoms of each element are in a unit of a substance.
subscript
The number of atoms of each element appears as a ____ after the symbol.
front
Numbers placed in ____ of a chemical formula show how many molecules of a substance that you have.
135
How many total atoms are in three molecules to table sugar? C12H22O11 > 3C12H22O11
Pure substance
matter that has a fixed composition and definite properties
pure substances
All elements and compounds are considered ____.
mixture
a combination of two or more pure substances that are not chemically combined
heterogenous
The substance in a ____ mixture are not distributed, or spread, evenly throughout the mixture.
homogenous
The components of a ____ mixture are distributed evenly.
Water
____ is a pure substance. It has a fixed composition and definite properties.
miscible
The liquids in gasoline are ____, which means that they can be mixed and will stay mixed.
immiscible
Oil and water are ____, which means they do not mix or will not stay mixed.
immiscible
Generally, you must stir a can of paint before you use it. Is paint miscible or immiscible?
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