_________________ is a measure of the amount of matter that an object contains, and though many people use
the terms interchangeably, mass is not the same as weight. Mass is essentially constant, while weight is
affected by gravitational pull.
Volume
_________________ is the amount of physical space a substance or object occupies. When you measure liquid
ingredients for a recipe, you measure the amount of space the liquid fills.
1. Pure substance
2. Mixture
Matter can be divided into 2 categories:
pure substance
2 categories of matter
A ___________________, also referred to as a substance, has constant composition and is made up of a single type
of element or compound.
,mixture
2 categories of matter
A ____________________ is the physical combination of two or more substances
subatomic particles
The components of an atom are referred to as ___________________ and include the electron, proton, and
neutron.
1. Electron
2. Proton
3. Neutron
What are the component of an atom?
Elements
__________________ are composed of a single type of atom, either as a single atom or chemically bonded
together.
,periodic table
The _______________________ displays all known elements according to similarities between elements' properties.
Matter
What makes up all of the material in the universe?
Mixtures
Elements
Matter
Pure substances
periodic table
__________________ a chart that displays all the known elements according to the similarities between elements'
properties.
1. uniform pure substances
2. mixtures.
matter can be classified into two broad categories:
, pure substance
A ________________ is a form of matter that has a constant composition (meaning that it is the same everywhere) and
properties that are constant throughout the sample. Pure substances can either be elements or compounds.
Aluminum, from which soda cans are made, is an example of a pure substance that is also considered an
element. A sample of aluminum would contain only aluminum atoms, all of which are arranged (ordered) in the
same way throughout the sample.
compound
A substance made up of two or more different elements chemically bonded together is called a
_________________. __________________ are pure substances as they have uniform and definite composition. An example
of a compound would be ordinary (non-iodized) table salt, also called sodium chloride. All samples of sodium
chloride are chemically identical with the same ratio of sodium to chlorine. Another example would be water,
a compound consisting of two elements: hydrogen and oxygen.
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there are about _________________ elements in the known universe.