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STAAR Review
Test Description: A mixture of Review question
Instructions: Answer all questions to get your test result.
1) Which subatomic particle has a mass of 1/1836 amu, a negative charge, and is located outside of the nucleus?
A
Protons
B
Electrons
C
Valance Electrons
D
Neutrons
2) Which subatomic particle has a mass of 1 amu, a neural charge, and is located inside the nucleus?
A
Neutrons
B
Protons
C
Valance Electrons
D
Electrons
3) Which subatomic particle has a mass of 1 amu, a positive charge, and is located inside the nucleus?
A
Valance Electrons
B
Neutrons
C
Electrons
D
Protons
4) What characteristic is the most important information to know when trying to determine an element’s identity?
A
Neutrons
B
Electrons
C
Valance Electrons
D
Protons
5) What characteristic determines an element’s chemical properties such as reactivity?
A
Valance Electrons
B
Protons
C
Neutrons
D
Electrons
6) What is the name given to the vertical columns of elements on the Periodic Table?
A
Group
B
Period
7) What is the name given to the horizontal rows of elements on the Periodic Table?
A
Period
B
Group
8) What term describes a shorthand way to represent an element or compound using symbols for its elements?
A
Chemical Equation
B
Chemical Symbol
C
Chemical Formula
9) Which of the following is not evidence that a chemical reaction has taken place?
A
Gas produced
B
Change of size or shape
C
Unexpected color change
D
Change in energy (light or temperature)
10) Which category of elements is located on the “zig-zag” line or “staircase” on the Periodic Table?
A
Nonmetals
B
Metalloids
C
Metals
11) Which category of elements is located on the right side of the Periodic Table?
A
Nonmetals
B
Metalliods
C
Metals
12) Which category of elements is located on the right side of the Periodic Table? List 3 examples. Which category of elements is located on the left
A
Meltalloids
B
Metals
C
Nonmetals
13) What term describes the amount of mass in a given volume of a certain substance?
A
Force
B
Speed
C
none of the above
D
Density
14) Where does all of the energy in food chains, food webs, and energy pyramids originate?
A
Sun
B
decomposers
C
Producers
15) What percentage of available energy gets passed from one energy level to the next?
A
100%
B
20%
C
50%
D
10%
16) Identify the following as characteristics of primary or secondary succession. Regrowth of an ecosystem after a disturbance.
A
Primary Succession
B
Secondary Succession
17) Identify the following as characteristics of primary or secondary succession. Forms where nothing previously existed.
A
Primary Succession
B
Secondary Succession
18) What term describes organisms that are better suited for their environment are more likely to survive and reproduce?
A
Genetic Diversity
B
Natural Selection
C
Selective Breeding
D
Variation
19) Which two body systems work together to break down food in the body and remove solid and liquid wastes?
A
Muscular and Skeletal
B
Digestive and Excretory
C
Digestive and Nervous
D
Endocrine and Circulatory
20) What term describes a variety of species with genetic variations in an ecosystem?
A
Biodiversity
B
Organism Relationships
C
Environmental Changes
D
Ecological Succession
*select an answer for all questions
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