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