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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
carbon
C
oxygen
D
phosphorous
2) How many electrons can be found in the 2nd electron cloud?
A
2
B
8
C
4
D
6
3) Which of the following bonds shares electrons?
A
peptide
B
hydrogen
C
covalent
D
ionic
4) Which of the following is a chemical change?
A
water freezing
B
wood burning
C
painting a house
D
dissolving sugar in water
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
compound
B
metal
C
mixture
D
element
6) Which of the following is an example of turning solar energy into chemical energy?
A
green plants making food
B
a battery charging
C
uranium releasing heat and creating steam
D
high winds turning a windmill
7) Elements found in group 16 are likely to...
A
gain electrons
B
become large molecules
C
melt
D
act like metals
8) Which of these produces most of the compounds found in acid rain?
A
nuclear fission
B
solar cells
C
fossil fuels
D
windmills
9) Water acts as a solvent of ionic compounds because
A
water is found in 3 states of matter
B
water is a liquid over wide range of temperatures
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 base
B
an isotope
C
an acid
D
a metal
*select an answer for all questions
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