Atoms
Matter
Mixtures
Compunds
The Periodic Table
100
Nucleus, proton, electrons, neutrons, energy levels
what are all the parts of an atom
100
anything that has mass and takes up space
What is matter
100
made of two or more substances that are together in the same place but not chemically combined
what is a mixture?
100
a pure substance made of two or more elements chemically combined in a set ratio.
What is compound?
100
Dmitri Mendeleev
who invented the periodic table
200
you round the mass to the nearest whole number, then subtract that from the atomic number
how do you caculate the number of neutrons in an atom
200
solid, liquids, gases, plasma's, bose einstein condensate
What are the three (or more) states of matter
200
homogenous and heterogenous.
name both of the types of mixtures
200
a chemical formula
What may a compound be represented by?
200
He arranged the elements by their increasing atomics masses.
How did Mendeleev order the elements?
300
the Dalton, Thomas, Nagoako, Rutherford models
name at least one atomic model created by a scientist besides a Bhor model
300
TRUE
true or false. a gas can change volume very easily.
300
hot cocoa and marshmallows, cereal and milk
What is an example of a heterogenous mixture?
300
shows elements in the compound and the ratio of atoms
What is a chemical formula?
300
by the elements atomic number
how is the periodic table arranged now?
400
they have no charge
what charge does a neutron have?
400
AMU's or Atomic Mass Units
What do scientists use to measure the mass of an atom?
400
kool-aid
What is an example of a homogenous mixture?
400
H2O, CO2
What is an example of a compund?
400
families
what are groups also known as?
500
Electrons
What travels the farthest from the nucleus and has a higher energy?
500
crystalline and amorphous
name one of the 2 types of solids.
500
each substance in a mixture keeps it's individual properties; the parts of a mixture are not combined in a set ratio
name two ways that mixtures differ from compounds.
500
1 to 2
What is the ratio of carbon to oxygen?
500
in a regular, repeated pattern.
What does the word periodic mean?
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