Atoms
The three particles that make up an atom
protons, electrons, neutrons.
During a chemical reaction, chemical bonds are ______.
broken
Attraction between substances of the same kind.
Cohesion
_________ solutions have a pH below 7.0
Acidic
Substances made of 2 or more different elements.
compounds
Atoms can be broken down by using chemicals. True or False?
________ bonds share electrons.
Covalent
An evenly distributed mixture of 1 or more substances
Solution
A pH scale measures the concentration of oxygen ions in a solution (true or false)
False (correct answer is hydrogen)
Tells how many electrons an atom has.
Atomic number
Subatomic particle that has a positive charge.
protons
Type of bond between 2 water molecules
Hydrogen
Attraction between different substances.
Adhesion
Compounds that reduce the amount of H+ in a solution
Bases
Atomic mass = protons + _______.
neutrons
Subatomic particles found in the nucleus.....
Protons and neutrons
A bond that is formed when an atom (or group of atoms) gains or loses electrons.
Ionic
When salt is dissolved in water, water is the
solvent (Hint-the major part of the solution)
What is 2 +2? Got to have an easy one once in awhile!
4
H is a chemical compound. True or False?
False (has to be 2 different elements)
Substances made up 1 kind of atom
element
__________bonds are the weakest type of bond.
Ionic
Water is an example of a ______ bond
covalent
A solution with a pH of 5 is _____ acidic than a solution with a pH of 1.
less
Cells are made of and surrounded by ______
H20