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Periodic Table
Physical
Changes
Isotopes and Radioactivity
Misc.
Misc.
100
Horizontal rows are called this.
What are periods.
100
Temperature at which a liquid becomes a gas.
What is boiling point.
100
Atoms with the same number of protons, but different numbers of neutrons.
What is an isotope?
100
Combining 2 substances so that individual particles of each substance can still be identified.
What is mixing.
100
Number of neutrons in carbon-12
What is 6 neutrons.
200
Vertical columns are called this?
What are groups.
200
Ability of a material to transfer heat.
What is thermal conductivity.
200
Element that has only radioactive isotopes.
What is a radioactive element.
200
Mixing a substance into another substance to form a solution.
What is dissolving.
200
Number of protons in carbon-14
What is 6 protons.
300
Elements in Group 18 are called this.
What are Noble Gases.
300
Any characteristic of a material that can be observed without changing the identity of the material itself.
What is physical property.
300
Radioactive element made by scientists.
What is a synthetic element.
300
Ability to transfer electric charge through a material.
What is electrical conductivity.
300
A physical property represented by mass divided by volume.
What is density.
400
Elements in Group 17 are called this.
What are Halogens?
400
Changes in state on earth.
What are solids, liquids, and gases.
400
Process by which an atom of one element is changed into an atom of another element.
What is transmutation.
400
Physical properties of common metals.
What is malleable, ductile, thermal conductivity, electrical conductivity, and luster.
400
A change where a new substance is produced.
What is a chemical change.
500
Elements in Groups 3 - 12 are called this.
What are transition elements.
500
Hardness is determined by this.
What is atomic structure.
500
Time it takes for a sample of a radioactive element to decay to half its original mass.
What is half-life.
500
Most reactive non-metals are in this group.
What is Group 17 (Halogens)
500
True or False. All radioactive elements are synthetic.
What is false.