Name: ___________________________ Hr. ___Date: ________________________
Chemistry Chapter 4.1 – 4.7 Review
1. Define “element”_______________________________________________________
__________________________________________________________________
2. Define “atom” _________________________________________________________
__________________________________________________________________
3. Define “Compound” ____________________________________________________
__________________________________________________________________
4. Define “chemical formula” _______________________________________________
__________________________________________________________________
5. List the three most common elements in the earth’s crust (with %).
________________(
%), ______________( %), and _____________( %)
6. List the three most common elements in the human body.
________________(
%), ______________( %), and _____________( %)
Know the Symbols and names for the first 36 elements.
7. Summarize the 5 Elements of Dalton’s Atomic Theory.
a. ____________________________________________________________
b. ____________________________________________________________
c. ____________________________________________________________
d. ____________________________________________________________
____________________________________________________________
e. ____________________________________________________________
____________________________________________________________
8. Write the chemical formula for
a. a molecule that contains four phosphorus atoms and ten oxygen atoms
_______________________________
b. a molecule that contains one uranium atom and six fluorine atoms
_________________________________
c. a molecule that contains one aluminum atom and three chlorine atoms
_________________________________
Name: ___________________________ Hr. ___Date: ________________________
9. List which elements, and how many atoms of each, the following are made up of.
elements
atoms of each
a. Fe2O3
________________
________________
_______
_______
b. NH4OH
________________
________________
_______
_______
c. Al2(SO3)3
________________
________________
________________
_______
_______
_______
Know the general procedure and results of JJ Thomson’s and Earnest Rutherford’s
experiments. Know the basic components of each of their models (electrons, protons,
nucleus,… etc)
10. Based on the given information in the table below, complete the table so that each of
the three common subatomic particles is named and assigned its proper symbol,
relative electric charge, and relative mass
Particle name
Relative
charge
Relative
mass
Symbol
1
1+
n0
11. Definition of isotope? __________________________________________________
_________________________________________________________________
12.
Isotope
Symbol
Hydrogen-2
2
1H
202
80 Hg
Atomic
Number
Mass
Number
15
95
number
of
protons
number of
neutrons
17
47
13. Define Atomic Number _________________________________________________
__________________________________________________________________
14. Define Mass Number ___________________________________________________
__________________________________________________________________
Name: ___________________________ Hr. ___Date: ________________________
15. What property of the nucleus of an atom is used to identify the element ?__________
_________________________________________________________________
16. Three isotopes of oxygen are named oxygen-16, oxygen-17, and oxygen-18 . Write
the isotopic chemical symbol for each .
oxygen-16 ________
oxygen-17 ________
oxygen-18 _______
17. Atoms are electrically ________________ because the atoms contain the same
number of electrons as they do ______________ .
18. The atoms of a given element all contain the same number of ______________ .
19. Atoms of the same element all have the same _____________ number but may have
different
______________ numbers .
20. How many neutrons are found in the nucleus of each of the atoms represented below?
79
35
185
238
1
Br _______ 123
51 Sb _______
74W ______
92 U _______
1 H _______
21. Complete the table below by writing the correct symbol or number in each cell .
Element
# of protons
mass
number
# of electrons
atomic
number
Se
# of neutrons
45
16
14
8
28
1
22. Complete the table below using the same types of naming/notation as illustrated in
the given items .
Isotope
Hydrogen-2
Symbol
2
1
Atomic
number
Mass
number
# of protons
# of neutrons
H
83
38
Sr
146
92
8
14
6
C
201
80
Name: ___________________________ Hr. ___Date: ________________________