SNC2P1
Name: ________________________________________
CHEMISTRY TEST #1 REVIEW
PART A – Match the following terms to their definition.
1. Physical Change
_______ 2 or more elements bonded together
2. Chemical Change
_______ an atom that has lost electrons
3. Element
_______ a compound with a metal and a nonmetal
4. Compound
_______ the last electron shell of an atom
5. Positive ion
_______ cannot be broken down any further
6. Negative ion
_______ valence electrons
7. Valence shell
_______ Group 17
8. Ionic compound
_______ no new substances are produced
9. Molecular compound
_______ a compound with 2 nonmetals
10. Halogens
_______ new substances with different properties
11. Noble gases
are produced
12. Alkali metals
_______ Group 1
13. elements in the same group
_______ an atom that has gained electrons
have the same number of ?
_______ Group 18
PART B – Ionic or Molecular?
Identify the types of atoms in each compound as either metal or non-metal. Then
decide if the compound is ionic or molecular.
Chemical Formula
Metal + Non-metal
or 2 Non-metals?
SrCl2
P2O5
SCl2
CBr4
Rb2S
Ionic or Molecular Compound?
PART C – Use the WORD BANK below to fill in the blanks.
1. A _________________________ tells you how many atoms of the element are in the
compound.
2. Metals are on the ____________________________ side of the staircase on the periodic
table.
3. The protons and ____________________________ are in the ___________________________.
4. The _____________________________ are surrounding the nucleus in shells or orbits.
5. Metals will _______________________________ electrons to become stable and nonmetals
will ___________________________ electrons to become stable.
6. Nonmetals will have a ________________________________ charge when they become ions
and metals will have a ______________________________ charge.
7. To become stable, all atoms want a ______________________________ outer shell.
8. A group of element symbols and subscripts that represent the MAKEUP of a
chemical compound is called a _______________________________.
chemical formula
negative
gain
Word Bank
full
left
lose
positive
subscript
nucleus
electrons
neutrons
right
PART D – Circle the best answer for each.
1.
Which of the following is an element?
a) water
b) salt
c) mercury
d) pizza
2.
Which is a chemical change?
a) Ripping a piece of paper in two.
b) Baking chocolate cupcakes.
c) Dissolving sugar into coffee.
d) A popsicle melting on a hot day.
3.
Which of the following is a compound?
a) aluminum
b) carbon dioxide
c) copper
d) Kool-Aid in water
4.
Which element has 34 electrons, 34 protons and 45 neutrons?
a) rhodium
b) bromine
c) sodium
d) selenium
5.
How many valence electrons does nitrogen have?
a) 2
b) 3
c) 4
d) 5
6.
Which ion will calcium form to become stable?
a) +2
b) +4
c) -2
d) -4
7.
Which family does Chlorine belong to?
a) alkali metal
b) alkaline earth metal
c) halogen
d) noble gas
8.
How many protons, neutrons and electrons does carbon have?
a) 6, 7, 6
b) 8, 7, 8
c) 8, 6, 8
d) 6, 6, 6
PART E- Indicate if the following compounds are Ionic or Molecular, by putting a
checkmark in the correct column.
Compound
sodium chloride
carbon tetrachloride
silver nitride
magnesium oxide
nitrogen monoxide
Ionic
Molecular
PART F – Naming Compounds (Only molecular compounds have the prefixes mono,
di, tri, etc.)
1. Mg3N2 __________________________________
5. CO _________________________________
2. LiCl _____________________________________
6. N2O2 _______________________________
3. BaO _____________________________________
7. CCl4 ________________________________
4. Al2S3 ____________________________________
8. NH3 ________________________________
PART G – Write the formula for the following compounds.
-crossover the charges (not the sign) and reduce the numbers for ionic
compounds
-write the number that matches the prefix for molecular compounds.
1. lithium oxide _____________________
5. sodium chloride __________________________
2. carbon dioxide ___________________
6. carbon tetrafluoride _____________________
3. potassium bromide ______________
7. diphosphorus trisulfide __________________
4. silicon tetraiodide _______________
8. barium iodide ____________________________
PART H – More Formula Writing
Identify the following compounds as ionic or molecular. Then write their formula.
Compound Name
Ionic or Molecular
Compound Formula
carbon monoxide
zinc oxide
potassium fluoride
dinitrogen pentoxide
aluminum sulfide
phosphorus trichloride
disulfur dinitride
magnesium phosphide
lithium iodide
diphosphorus hexoxide
PART I – Reading Chemical Formulas
Name of Compound
sodium fluoride
Chemical
Formula
NaF
calcium nitride
Ca3N2
diphosphorus trioxide
P2O3
boron triiodide
BI3
beryllium chloride
BeCl2
Number of Atoms of Each Element
1 atom of sodium
1 atom of fluorine