WorksheetsChemistry Review
Total questions: 41
Worksheet time: 21mins
What are 2 or more atoms joined together called?
element
molecule
nucleus
electron shells
What are molecules produced by a chemical change? (2 or more DIFFERENT elements bonded together)
compound
molecule
nucleus
electron shells
True or False - Compounds are the same as the original elements.
True
False
What is a substance containing only one kind of atom?
compound
molecule
formula
element
What is the study of matter?
biology
physics
chemistry
geology
What is the smallest piece of an element?
atom
compound
element
molecule
What part of an atom forms a bond?
protons
electrons
neutrons
nucleus
What does it mean for an atom to be stable?
it has a strong nucleus
it needs 1 valence electron
its outer electron shell (ring) is completely filled
it has zero electrons
What group of elements are stable and do not usually form bonds with other elements?
alkali metals
transition metals
alkaline metals
noble gases
Which is a type of bond where atoms SHARE outer (valence) electrons?
covalent bonds
ionic bonds
ion
bond sharing
What type of bonding is when an atom gains or loses an electron?
covalent bond
ionic bond
ion
independent bonding
What is a positively or negatively charged atom called (it has gained or lost an electron)?
bond
element
ion
molecule
If an atom has gained or received an electron than it is a __________ charged ion
positively
negatively
neutrally
If an atom has given or lost an electron than it is a __________ charged ion
positively
negatively
neutrally
What is a type of bond that has two nonmentals bonding together?
covalent bonds
ionic bonds
ion
bond sharing
What is a type of bond that has a nonmental and metal bonding together?
covalent bonds
ionic bonds
ion
bond sharing
Which type of bond is similar to a magnet and has opposite charges attracting to hold the bond together?
covalent bond
ionic bond
independent bonding
bond sharing
What is anything that has mass and takes up space called?
element
molecule
compound
matter
What are the parts inside an atom's nucleus?
protons only
neutrons only
protons and neutrons
protons and electrons
Match the charge to their part...electron, neutron, proton.
neutral, positive, negative
negative, positive, neutral
positive, neutral, negative
negative, neutral, positive
Where are the electrons in an atom?
around the outside in shells/rings (or cloud)
nucleus
in the middle
How many electrons can the first shell/ring hold?
8
2
0
16
The second electron shell can hold _______ electrons.
8
2
0
16
What uses chemical symbols and numbers to abbreviate the name of a compound?
chemical element
chemical change
chemical formula
physical change
What is it called when molecules combine to form new substances?
decomposition
synthesis
double replacement
single replacement
What is it called when a compound is broken down into simpler compounds?
decomposition
synthesis
double replacement
single replacement
What does the atomic number tell you?
# of neutrons
# of electrons
# of protons
# of protons and neutrons
True or False - All elements are naturally made.
True
False
What are abbreviations for the names of the elements called?
chemical formulas
chemical symbols
chemical letters
chemical atoms
What are the horizontal rows called?
groups
families
columns
periods
What are the vertical columns called?
rows
families or groups
shells
periods
What do the periods tell someone when looking at the periodic table?
# of valence electrons
# of electron shells
# of total electrons
# of total protons
What do the families tell someone when looking at the periodic table?
# of valence (outer) electrons
# of electron shells
# of total electrons
# of total protons
What is the atomic mass?
The number of protons and electrons
The number of protons only
The number of neutrons only
The number of protons and neutrons
What color are acids and what number are they on the pH scale?
blue, 8-14
red, 8-14
red, 0-6
blue, 0-6
What color are bases and what number are they on the pH scale?
blue, 8-14
red, 8-14
red, 0-6
blue, 0-6
What is the number of a neutral solution and give an example?
7, baking soda
10, water
3, vinegar
7, water
Bases taste __________ and Acids taste __________.
bitter, sweet
bitter, sour
sour, bitter
sweet, sour
What is the term for an acid that is strong enough to dissolve metals?
hydroxide
alkalis
corrosive
corruption
Name an example of an acid and a base.
Acid - lemon, Base - baking soda
Acid - lemon, Base - coffee
Acid - baking soda, Base - bleach
Acid - water, Base - tomato juice
What is litmus paper and cabbage juice called because it changes color when in an acid or base?
alkali
indicator
lime
peat moss
