Review #1 Unit 2 Test Chemical Reactions
period
Name:
Subatomic Particles & Periodic Table
1. What “jobs” do each of the subatomic particle have?
A. A proton’s main job is to
of
. It also has a mass
amu. What is the abbreviation amu stand for?
B. A electron’s main job is to
. It also has a mass
amu. Does an electron’s mass affect the mass of an atom?
of
C. A neutron’s main job is to
of
. It also has a mass
amu.
2. Find the element chlorine (Cl) on the periodic table.
A. Atomic #
; # of protons
; average # of neutrons
; # of electrons
; what is its average atomic mass
.
B. What kind of element is it?
C. Does this group have a specific name?
D. What group # is it in?
E. How many valence electrons?
F. Does this element form ions?
i. If yes, does it loose or gain electrons?
How many?
G. Write the ion notation for this element.
H. Will this element form a chemical bond?
i. If yes, it can form (circle the bonds it can form): covalent bonds ionic bonds both
3. Find the element strontium (Sr) on the periodic table.
A. Atomic #
; # of protons
; average # of neutrons
; # of electrons
; what is its average atomic mass
.
B. What kind of element is it?
C. Does this group have a specific name?
D. What group # is it in?
E. How many valence electrons?
F. Does this element form ions?
i. If yes, does it loose or gain electrons?
How many?
G. Write the ion notation for this element.
H. Will this element form a chemical bond?
i. If yes, it can form (circle the bonds it can form): covalent bonds ionic bonds both
OVER
Review #1 Unit 2 Test Chemical Reactions.
4. Find the element krypton (Kr) on the periodic table.
A. Atomic #
; # of protons
; average # of neutrons
; # of electrons
; what is its average atomic mass
.
B. What kind of element is it?
C. Does this group have a specific name?
D. What group # is it in?
E. How many valence electrons?
F. Does this element form ions?
i. If yes, does it loose or gain electrons?
How many?
G. Write the ion notation for this element.
H. Will this element form a chemical bond?
i. If yes, it can form (circle the bonds it can form): covalent bonds ionic bonds both
5. Why do substances form chemical bonds?
6. What group of elements don’t form chemical bonds?
7. When are atoms most stable?
8. What kind of bonds form when valance electrons are shared?
9. What kind of bonds form when valance electrons are transfer?
10. Ionic bonds form
11. Covalent bonds form when two
loose electrons to
share a
.
of electrons.
A. Single bonds share
(2 words)of electrons.
B. Double bonds share
(2 words)of electrons.
C. Triple bonds share
(2 words)of electrons.
12. Identify the type of bond in the following compounds.
A. NaCl
How do you know?
B. F2
How do you know?
C. CaO
How do you know?
D. CH4
How do you know?