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Semester 1 Final
Test Description: Semester final study guide
Instructions: Answer all questions to get your test result.
1) Accuracy compares what you measured to the real value or answer.
A
False
B
True
2) A period refers to the vertical columns on the periodic table.
A
True
B
False
3) The ___________ is the standard by which your results can be compared.
A
independent variable
B
constant
C
control
D
dependent variable
4) An atomic mass of an atom consists of the mass of the ________________________.
A
neutrons and electrons
B
protons and neutrons
C
protons, neutrons and electrons
D
protons and electrons
5) Elements in Groups 3 through 12 of the periodic table are called ____________________.
A
transition elements
B
representative elements
C
halogens
D
noble gases
6) A scientist's personal opinions that may affect an experiment is __________________.
A
bias
B
precision
C
accuracy
D
ethics
7) Baking the bread in the oven causes ____.
A
no change
B
nuclear reaction
C
chemical change
D
physical change
8) A(n) ___________________ is the basic unit of matter.
A
space
B
atom
C
element
D
electron
9) All transition elements are ______________________.
A
gases
B
metals
C
metalloids
D
liquids
10) The variable being measured is the _____________________.
A
control
B
constant
C
dependent variable
D
independent variable
11) Which of these is a chemical property of a sheet of paper?
A
The paper can be burned.
B
The paper does not attract a magnet.
C
The paper does not conduct electricity.
D
The paper can be crumpled.
12) Copper, gold and iron all have some of the same characteristic properties. They are all shiny and conduct electricity. They can be hammered into a shape and drawn into a wire. What classification of elements includes copper, gold, and iron?
A
non-metal
B
metal
C
gas
D
metalloid
13) A scientist experiments with lab rats in a controlled experiment about how the amount of exercise affects the body mass of rats. What is the INDEPENDENT variable of the experiment?
A
type of food given spent exercising
B
amount of food given to the rats
C
size of each rats enclosure
D
length of time spent exercising
14) How many valence electrons does Calcium have?
A
1
B
2
C
4
D
3
15) Mashing bananas results in ____.
A
chemical change
B
physical change
C
no change
D
endothermic reaction
16) How close measurements are to each other is:
A
precision
B
accuracy
C
hypothesis
D
conclusion
17) ____________________ are the vertical columns on the periodic table whose elements share properties.
A
metals
B
periods
C
Non-metals
D
families
18) Which item best represents Dalton's image of an atom?
A
candy bar
B
marble
C
balloon full of air
D
cork
19) Which process is an example of a physical change?
A
burning
B
rusting
C
cutting
D
reacting with acid
20) Oil will float on water because oil is less dense than water.
A
False
B
True
*select an answer for all questions
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