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