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Structure
Elements, Mixtures, Compounds
More Atomic Structure
Isotopes
Other Atomic Stuff
100
Protons and neutrons are found here
What is the nucleus?
100
Molecules can be both
What are elements or compounds
100
Carbon has _____ protons
What is 6
100
This Carbon isotope is commonly used to date dead stuff
What is Carbon 14?
100
Rutherford's famous experiment that proved the existence of a small positively charged nucleus, shot particles at what kind of foil
What is gold?
200
Area where electrons can be found
What are energy levels, quantums, shells or orbitals
200
This is when two or more elements are chemically combined.
What is a compound?
200
Mass number is determined by
What is rounding the atomic mass to nearest whole number
200
When an isotope is unstable that makes it
What is radioactive?
200
An electron that causes a flash of light when heated (Flame Test Lab) is making a
What is Quantum leap?
300
The outermost energy level is commonly referred to as this
What is valence energy level
300
____________ best describes a pure substance.
What is an element?
300
Element with an Atomic mass of 18.998
What is Fluorine?
300
Alpha particles are composed of
What are two protons and two neutrons?
300
Gamma rays can be stopped by
What is several inches of lead or concrete?
400
This many maximum valence electrons can go on the SECOND energy level
What is 8?
400
A no bake cookie like in FACS is an example of a
What is mixture?
400
A balanced atom of this element has 54 electrons
What is Xenon?
400
Gamma rays aren't particles but this
What is energy?
400
The number of neutrons Nitrogen 21 has
What is 14?
500
Radioactive isotopes have different numbers of
What are neutrons?
500
Water is an example of a
What is compound
500
Chemical properties of an element are determined by
What is the number of valence electrons
500
If a 12 gram sample has a half life of 4 days, how much of that sample will remain after 8 days
What is 3 grams?
500
An alloy is an example of a
What is mixture?