The Basics
The smallest unit of matter.
What is an ATOM?
More than one hundred substances that cannot be chemically broken down into simpler substances and are primary constituents of matter, distinguished by its atomic number.
What is an ELEMENT?
Simplest form of a compound that can exist when two or more atoms combined to form a substance (O2, F2, H2)
What is a MOLECULE?
Column in the periodic table, which denotes elements with the same properties.
What is a GROUP?
The amount of space an object takes up.
What is VOLUME?
Any form of matter that is uniform throughout and has consistent properties.
What is a SUBSTANCE?
Particles with no charge, but have mass.
What is a NEUTRON?
Pure substance made of molecules bonded together. (H2O, CO2, SiO2)
What is a COMPOUND?
Row in the periodic table.
What is a PERIOD?
The amount of matter in an object.
What is MASS?
Anything with mass and volume.
What is MATTER?
Positively charged particles with mass.
What are PROTONS?
An electron on the outermost energy level of an atom.
What is a VALENCE ELECTRON?
An element that conducts heat, electricity and is shiny.
What is a METAL?
Mass per unit volume. m/v
What is DENSITY?
A solid material whose atoms, molecules, or ions are arranged in an ordered pattern.
What is a CRYSTAL?
Negatively charged particles.
What are ELECTRONS?
Rule that state atoms are most stable when they have a full set of valence electrons.
What is the OCTET RULE?
Element located on the right of the periodic table that does not conduct electricity well.
What is a NONMETAL?
The force with which a body is pulled toward the earth due to gravitational pull. Differs on other planets.
What is WEIGHT?
The big number that goes before a chemical symbol that shows how many molecules are in a chemical formula.
What is an COEFFICIENT?
A certain amount of energy an electron can have in an atom.
What is an ENERGY LEVEL?
Charged particle, either positive or negative.
What is an ION?
An element that has both the properties of metals and non-metals.
What is a METALLOID?
The number of protons in an atom, and what the periodic table is arranged by.
What is ATOMIC NUMBER?
A tool showing all the elements, arranged by proton number and properties.
What is the PERIODIC TABLE?
DAILY DOUBLE!!!!!!!!
Who created the periodic table?
Dmitri Mendeleev
Does not react.
What is INERT?
a non-reactive element in group 18.
What is a NOBEL GAS?
Tiny number in a chemical formula that denotes the number of atoms in a chemical formula.
What is a SUBSCRIPT?