Parts of an Atom
Center of the atom, includes neutrons and protons
nucleus
Chemical bond in which electrons are shared
covalent bond
This is what the arrow points to in a chemical reaction
products
the basic unit of matter
atom
An atom with the normal number of protons and electrons, but a different number of neutrons
isotope
particles outside of the nucleus
electrons
Attraction between molecules due to their oppositely charged regions
Van der Waals force
a protein that lowers a reaction's activation energy
enzyme
if an atom loses an electron what will the overall charge be
positive
an atom with the normal number of protons and neutrons, but a different number of electrons
ion
particles with a positive charge
protons
a chemical bond caused by an electrical attraction between two oppositely charged atoms or groups of atoms called ions
Ionic bond
a chemical reaction that releases heat energy
exothermic reaction
three factors that can effect enzyme activity
pH, temperature, and other substances
the horizontal rows on the periodic table
periods
particles with no charge
neutrons
a chemical reaction is caused by the ____________ of chemical bonds in compounds and the formations of new ones
breaking
The minimum amount of energy required for a reaction to occur
activation energy
a pure substance that cannot be broken down into any other substance
the vertical columns on the periodic table
groups
particles with a negative charge
electrons
molecule
a chemical reaction that absorbs heat energy
endothermic reaction
True or False: You can change the number of atoms in a compound and the compound will always be the same
False
A pure substance formed when two or more atoms form chemical bonds with one another
compound