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SCI 155 Chap 9a
Test Description: This game reviews topics covered in Chapter 9 of your text.
Instructions: Answer all questions to get your test result.
1) Carbon dioxide is an example of a(n)
A
heterogeneous mixture
B
homogeneous mixture
C
compound
D
element
2) Sugar water is an example of a(n)
A
element
B
homogeneous mixture
C
heterogeneous mixture
D
compound
3) Melting is a * change and rusting is a * change.
A
chemical, physical
B
physical, chemical
4) Elements are made of * and compounds are made of *.
A
molecules, atoms
B
atoms, molecules
5) In a chemical equation, products are on the * and reactants are on the *.
A
right, left
B
left, right
6) How many valence electrons does a phosphorus atom have?
A
8
B
3
C
5
D
15
7) What type of bonding occurs when atoms transfer electrons?
A
ionic
B
covalent
C
metallic
D
hydrogen
8) Will sulfur gain or lose electrons to achieve an octet?
A
gain
B
lose
9) How many electrons are involved when boron forms an ion?
A
5
B
3
C
1
D
2
10) What charge does the calcium ion have?
A
+2
B
-1
C
-2
D
+1
*select an answer for all questions
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