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Objective 4 Test
Test Description: Obj 4
Instructions: Answer all questions to get your test result.
1) An element with 6 protons is....
A
boron
B
phosphorous
C
carbon
D
oxygen
2) How many electrons can be found in the 2nd electron cloud?
A
2
B
8
C
6
D
4
3) Which of the following bonds shares electrons?
A
ionic
B
covalent
C
hydrogen
D
peptide
4) Which of the following is a chemical change?
A
wood burning
B
water freezing
C
dissolving sugar in water
D
painting a house
5) There is an unknown substance that is a silvery powder with a constant melting point and it cannot be chemically or physically separated into different substances. This unknown substance is most likely a/an
A
element
B
mixture
C
compound
D
metal
6) Which of the following is an example of turning solar energy into chemical energy?
A
uranium releasing heat and creating steam
B
a battery charging
C
green plants making food
D
high winds turning a windmill
7) Elements found in group 16 are likely to...
A
act like metals
B
gain electrons
C
become large molecules
D
melt
8) Which of these produces most of the compounds found in acid rain?
A
nuclear fission
B
windmills
C
solar cells
D
fossil fuels
9) Water acts as a solvent of ionic compounds because
A
water is a liquid over wide range of temperatures
B
water is found in 3 states of matter
C
water takes the shape of the container
D
water molecules are polar
10) A substance used to clean ovens must be handled with rubber gloves. This substance is also slippery and will turn litmus paper blue. What does this substance likely contain?
A
a metal
B
an acid
C
an isotope
D
a base
*select an answer for all questions
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