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Atomic Structure
Periodic Table
Matter
Compounds and Mixtures
Mixed Bag
100
The ___ is the particle in the nucleus of an atom that caries a positive charge.
Proton.
100
The weighted average of mass of the isotope of an element. This number is the number of protons plus the number of neutrons
atomic mass
100
Anything that has mass and takes up sapce
matter
100
Matter that has the same composition and properties through is called a ____. Ex: bar of gold or sheet of aluminum
substance
100
Which is a heterogeneous mixture? air, brass, a salad, or apple juice
salad
200
Negatively charged particles that orbit the nucleus of the atom.
Electron
200
The number that identifies the number of protons in an element.
atomic number
200
The law of conservation of matter, states that matter can not be ________ or ___________.
created or destroyed
200
What is a substance whose smallest unit is made up of atoms of more than one element bonded together?
compound
200
Group 1 of the periodic table are all metals except for which element?
hydrogen
300
particles in the nucleus that have no charge.
neutron
300
How do you determine the number of nuetrons in an element?
Subtract the atomic number from the atomic mass
300
what is matter that is made up of only one kind of atom?
an element
300
What results when two or more substances (elements or compounds) come together, but don't combine to make a new subtance?
a mixture
300
What is the name for group 18 on the periodic table?
noble gases
400
The area around the nucleus that the electrons orbit in.
electron cloud
400
Horizontal rows in a periodic table are called ____. Vertical columns in a periodic table are called ____.
Horizontal Rows = Periods Vertical Columns Groups/Families
400
Atoms of the same element that have different numbers of neutrons are called ___.
isotopes
400
What is the difference between a homogeneous mixture and a heterogeneous mixture?
homogeneous are the same throughout, whereas heterogeneous are different throughout
400
How many protons, electrons, and nuetrons does the element Copper, (Cu) have?
protons- 29 nuetrons- 35 electrons-29