Nucleus
Numbers, numbers!
Periodic Table
Miscellaneous
What's the MATTER?
100
positively charged particles in an atom
What are protons?
100
number of protons in an atom's nucleus
What is the atomic number?
100
horizontal row on the periodic table
What is period?
100
the periodic table is arranged in increasing order of this
What is atomic number (or number of protons)?
100
water, salt and sugar are all examples
What are compounds?
200
How to describe an atom with equal numbers of protons and electrons?
What is neutral?
200
atoms of the same element that have different numbers of neutrons
What are isotopes?
200
elements on the left side of the periodic table
What are metals?
200
an atom that is negative has more of these
What is electrons?
200
trail mix and pizza are examples
What are heterogenous mixtures?
300
neutral particles in the nucleus of an atom
What are neutrons?
300
the number that never changes for an element
What is atomic number or number of protons?
300
the abbreviation for each element
What is chemical (or element) symbol?
300
what scientists believe protons and neutrons are made of
What are quarks?
300
blood would be an example of this mixture
What is homogeneous?
400
sum of number of protons and neutrons in the nucleus
What is the mass number?
400
weighted average mass of the mixture of its isotopes
What is average atomic mass?
400
vertical column on the periodic table
What is a group?
400
elements on the ride side of the periodic table
What are nonmetals?
400
change that causes a new substance to be formed
What is chemical?
500
negatively charged particles in an atom
What are electrons?
500
The number of these changes in isotopes of elements
What are neutrons?
500
elements in the same group have the same number of these in their outer energy levels
What are electrons?
500
Elements in groups 3-12 are known as this
What are transition elements?
500
fog and milk are examples
What are colloids?
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