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WorksheetsUnit 2 Chemistry
Total questions: 36
Worksheet time: 18mins
basic unit of matter
mass
nucleus
electron
atom
Center of atom that contains protons and neutrons
molecule
nucleus
electrons
found in nucleus, no charge
electron
proton
neutron
positive charge, found in nucleus
proton
neutron
electron
negatively charged particle
electron
neutron
proton
number of protons
atomic mass
atomic number
8
sum of protons and neutrons
nuclear mass
atomic number
mass number (atomic mass)
area around the nucleus of an atom where the atom's electrons are most likely to be found
electron cloud
electron bubble
electron donut
A chart of the elements showing the repeating pattern of their properties
Atomic table
Ms. Hiles' chart
periodic table (PT)
A one or two letter representation of an element
chemical symbol
atomic initials
atomic symbol
A reaction that ABSORBS energy in the form of heat; feels cold
interthermic reaction
exothermic reaction
endothermic reaction
A reaction that RELEASES energy in the form of heat; feel warm or hot
pyrothermic
endothermic reaction
exothermic reaction
organic compounds contain (a) (C)
hydrocarbon compounds are composed of carbon (C) and ___________ (H)
hydrogen
helium
halogen
A substituted hydrocarbon with one or more of the -COOH group of atoms
organic base
carboxyl
organic acid
compound made up of carbon, hydrogen, and oxygen atoms; major source of energy for the human body
organic compound
carbohydrate
inorganic compound
large compound formed from combinations of many monomers
DNA
monomer cluster
polymer
A simple compound whose molecules can join together to form polymers
monomer
manimore
part of eukaryotic cell division during which the cell nucleus divides
meiosis
mitosis
fision
weighted average of the atomic masses for the isotopes of an element
mid-atomic mass
average atomic mass
isomasses
rows on the periodic table, 7
family
groups
periods
columns on the periodic table, 18
group
period
peri-column
Elements that are good conductors of electric current and heat; left side of PT
nonmetals
metals
transition elements
Elements that are poor conductors of heat and electric current; right side of PT
semi-metals
nonmetals
metals
the force that holds two atoms together
electromagnetic bond
biochemistry
chemical bond
The electrons in the outermost shell (main energy level) of an atom; these are the electrons involved in forming bonds.
magnetic electrons
atomic electrons
valence electrons
A chemical bond between oppositely charged ions; metal + nonmetal; EX: sodium (Na+) and Chlorine (Cl-)
covalent bond
ionic bond
magnetic bond
A chemical bond formed when two atoms share electrons; nonmetal + nonmetal; EX: Carbon (C) and Oxygen (O)
metallic bond
ionic bond
covalent bond
two or more atoms held together by covalent bonds
diatomic molecule
poly-molecule
molecule
A chemical bond formed by the attraction between positively charged metal ions and the electrons around them; metal + metal; EX: Copper (Cu) and Zinc (Zn)
metallic bond
ionic bond
covalent bond
a chemical equation is a short, easy way to show a chemical reaction, using (a)
(a) are the starting material in a chemical reaction; to the left of the arrow
(a) are the ending materials in a chemical reaction; to the right of the arrow
Matter is neither created nor destroyed so a chemical equation must be balanced
Conservation of energy
Theory of Conservation of Mass
Law of Conservation of Mass
A number in front of a chemical formula in an equation that indicates how many molecules or atoms of each reactant and product are involved in a reaction.
coefficient
subscript
superscript
Energy cannot be created or destroyed
Conservation of environment
Conservation of Energy Theory
Law of Conservation of Energy
