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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
Carbon
B
Cesium
C
Calcium
D
Beryllium
2) Where are the most reactive elements located?
A
Halogens
B
Group 1-Alkali Metals
C
Group 2-Alkaline Earth Metals
D
Nobel gases
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
Halogens
B
Alkaline Earth Metals
C
Alkali Metals
D
Nobel gases
5) Mass is not created or destroyed
A
Law of Gravity
B
Law of Compounds
C
Law of Conservation of Mass
6) Why do we balance equations?
A
Torture
B
Law of Conservation of Mass
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
5 g
B
3 g
C
6 g
D
2 g
8) If I reacted H and Cl to form HCl. What is/are the reactants?
A
H and Cl
B
Cl
C
HCl
D
H
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 + 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 valence electrons
B
How many shells/orbitals
12) How many valence electrons does Chlorine have?
A
17
B
2
C
7
D
3
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
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
Students
B
Chewing gum
C
Test scores
*select an answer for all questions
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