Vocabulary
Chemistry 1
Chemistry 2
Bonding
Properties of Water
Acids & Bases
100
What is the name for a mixture of evenly distributed substances?
solution
100
What is the term for anything that has mass and takes up space?
matter
100
What is the name for an atom that has gained or lost electrons?
ion
100
Why do atoms bond?
to become stable
100
Which property of water allows water to dissolve many different substances?
Water is a good solvent.
100
What is the pH range for a basic substance?
Greater than 7
200
What term describes the substance that is dissolved?
solute
200
What is the smallest unit of matter?
atom
200
What charge will an atom have if it gains one electron?
negative
200
What kind of bond is formed when atoms share electrons?
covalent bond
200
Which property of water helps us maintain a stable internal temperature?
Water has high heat capacity. (when water evaporates from our skin, it helps cool our bodies)
200
What kind of substance has a pH range of <7?
acid
300
What term describes the substance that does the dissolving?
solvent
300
What three subatomic particles make up an atom AND what charge does each have?
Proton (positive)
Neutron (no charge/neutral)
Electron (negative)
300
What charge will an atom have if it loses one electron?
positive
300
What type of bond is formed when electrons are transferred from one atom to another?
ionic bond
300
What is cohesion?
attraction between substances of the same kind
300
What is pH a measure of?
the concentration of H+ (hydrogen ions) in a solution
400
What subatomic particle determines an element's properties?
number of protons
400
State the location of where each subatomic particle can be found in an atom.
proton and neutrons -- nucleus
electrons -- electron cloud around nucleus
400
What is the relationship between an atom and an element?
Elements are made of one kind of atom.
400
What type of bond usually forms between water molecules?
hydrogen bond
400
What is adhesion?
attraction between different substances
400
What type of substances are sour-tasting or corrosive?
acids
500
What conveys the number of protons in the nucleus of an atom?
atomic number
500
How many electrons does Krypton have?
36
500
What is a molecule made of?
two or more atoms
500
Why do hydrogen bonds form between water molecules?
Water is polar, causing one side of each molecule to be slightly positive and the other side slightly negative.
500
Which property of water allows paperclips to lay on top of the water?
surface tension
500
What type of substance releases H+ in water?
acid
600
How do you find the atomic mass of an element?
add the number of protons and neutrons
600
How many neutrons does Uranium have?
146
600
What is an compound made of?
atoms of two or more different elements
600
When do atoms become stable?
When their outer shells are full.
600
Which property of water is caused by hydrogen bonding at cold temperatures?
Water is less dense as a solid.
600
What is a buffer?
A substance that maintain a fairly constant pH.