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8th Grade Science 2
Test Description: Review
Instructions: Answer all questions to get your test result.
1) What element has properties similar to Lithium?
A
Beryllium
B
Carbon
C
Calcium
D
Cesium
2) Where are the most reactive elements located?
A
Group 2-Alkaline Earth Metals
B
Group 1-Alkali Metals
C
Halogens
D
Nobel gases
3) Where are the least reactive elements located at?
A
Alkali metals
B
Alkaline Earth Metals
C
Halogens
D
Nobel gases
4) What group of NONMETALS are the most reactive?
A
Halogens
B
Nobel gases
C
Alkali Metals
D
Alkaline Earth Metals
5) Mass is not created or destroyed
A
Law of Conservation of Mass
B
Law of Gravity
C
Law of Compounds
6) Why do we balance equations?
A
Law of Conservation of Mass
B
Because of elements
C
Torture
7) If I reacted 2 g of H and 3 g of Cl to form HCl. How much HCl is produced?
A
6 g
B
3 g
C
2 g
D
5 g
8) If I reacted H and Cl to form HCl. What is/are the reactants?
A
HCl
B
H
C
H and Cl
D
Cl
9) If I reacted H and Cl to form HCl. What is/are the products?
A
Cl
B
H and Cl
C
HCl
D
H
10) Which equation supports the Law of Conservation of Mass?
A
2H + 2O yields 2HO
B
2H + O yields HO
C
2H + O yields 2HO
11) What do the columns/groups/families tell you?
A
How many valence electrons
B
How many shells/orbitals
12) How many valence electrons does Chlorine have?
A
7
B
2
C
3
D
17
13) Elements on the left side of the periodic table
A
nonmetals
B
metals
C
metalloids
14) Elements on the right side of the periodic table
A
Nonmetals
B
metalloids
C
metals
15) Boron is
A
Metalloid
B
Non-metal
C
Metal
16) I want to see if chewing gum increased test scores. What is the independent variable?
A
Chewing gum
B
Test scores
C
Students
17) I want to see if chewing gum increased test scores. What is the dependent variable?
A
Test scores
B
Chewing gum
C
Students
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