Atomic Structure I
This particle "orbits" the center of the atom.
What is an electron?
This particle has a positive charge.
What is a proton?
The term for the two (or more) components before a chemical reaction takes place.
What is reactants?
This group of metals is the most reactive, and has one valence electron.
What is alkali metals?
The point at which a liquid turns into a gas.
What is the boiling point?
The part of the atom that contains protons and neutrons.
This particle is electrically neutral.
What is a neutron?
The term for what is produced by a chemical reaction.
What is products?
This group of metals has two valence electrons.
What is alkaline earth metals?
Atoms in this state of matter will expand to fill their container.
What is a gas?
The number of electrons in the innermost shell.
What is 2?
This particle has very low mass.
What is an electron?
This type of chemical reaction absorbs energy.
What is endothermic?
Ununseptium is part of this group.
What is halogens?
Atoms in this state of matter have a fixed volume but an undefined shape.
What is a liquid?
The number of electrons in a complete shell (excluding the innermost shell).
What is 8?
The number of protons is the same as the atomic _____.
What is atomic number?
An atom of radium needs to bond with two atoms from this group to form a stable electron shell.
What is halogens?
This group is usually unreactive.
What is noble gasses?
The burning of wood describes which type of change?
What is a chemical change?
Actium has this number of valence electrons in its outermost shell.
What is 3?
The number of protons plus the number of neutrons is approximately equal to the atomic _______.
What is atomic mass?
Two molecules of phosphate require 3 atoms of this group to make a stable compound.
What is alkaline earth metals?
What is metalloids?
The majority of matter in the universe exists in this state.
What is plasma?