Download Atoms, elements, and compounds test review 16

Name ______________________________________ Date __________________ Class Period _________
Atoms, Elements, and Compound Test Study Guide
I.
Fill in the blank with the correct word. (molecule, equations, compound, element, subscript,
coefficient, formula)
1. A pure substance made of only 1 type of atom is called _______________________________.
2. When 2 or more elements are combine to form a new substance it is a ______________________.
3. A __________________________ is used to represent a compound.
4.___________________________ are used to show a chemical change or reaction needed to make a
compound.
5. The small number to the right of an element symbol that tells the number of atoms is called a
__________________________________.
6. The large number to the left of the element symbol that tells the number of molecules is called a
_________________________________.
7. A _____________________________ is the smallest piece of a compound.
II. Short Answer.
8. In an equation/formula, what does a subscript tell you?
9. In an equation, what does a coefficient tell you?
10. Draw a molecule of water H2O below.
11. Label each example below as compound (C) or element (E). Then write the name of each element and
how many atoms of each
a. CO2 carbon 1, oxygen 2
compound
e. CaCo2 ____________________ ________
b. Fe ___________________
________
f. Al ______________________ ________
c. H20 __________________
________
g. O2 ________________________________
d. HCl ___________________ ________
_________
h. AlCl3 _____________________ _________
12. Label the atom model below. Use the following: proton, electron, neutron, nucleus, k
shell, L shell, M shell, 2, 8, 18.
+
0
13. Label
the periodic table box below. Use the following: atomic number, element
symbol, element name, atomic mass, protons and electrons, protons PLUS neutrons.
Subatomic
Particle
14. Proton
15.Neutron
16. Electron
5
B
Boron
10.811
Location
Charge
Matching: Using the word box below, write the letter of the correct
vocabulary word for each definition.
17)
_______________The 3 smaller pieces found inside an atom.
18)
19)
20)
_____________The building block of matter/smallest part of matter.
_________________Pure substances made of only one type of atom.
__________________The heavy center of the atom.
21)
__________Energy levels around the nucleus where electrons are
moving.
22)
____________holds 2 electrons
23)
____________The positive subatomic particle found in the nucleus.
24)
_____holds 8 electrons.
25)
_____The negative subatomic particle found outside the nucleus.
26)
_____holds 18 electrons.
27)
_____Number that tells the number of protons PLUS neutrons.
28)
_____Letter(s) that chemically represent each element
29)
_____Number that tells the number of protons and electrons.
A. Atomic number
B. Atomic mass
C. Element symbol
D. K shell
E. L shell
F. Proton
G. M shell
H. Electron
I. Nucleus
J. Shells
K. Atom
L. Element
M. Subatomic particles
Use the chart above to answer the following questions.
30. Which element has more protons – Al or Li?
31. What would be the correct way to write the element symbol for aluminum # 13-AL or Al?
Why?
32. What subatomic particle determines the type of element?
32. How many neutrons does Sodium (Na) have? Show your math.
33. If an element loses an electron does it become a new element?