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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
compound
B
heterogeneous mixture
C
homogeneous mixture
D
element
2) Sugar water is an example of a(n)
A
element
B
heterogeneous mixture
C
compound
D
homogeneous mixture
3) Melting is a * change and rusting is a * change.
A
physical, chemical
B
chemical, physical
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
15
D
5
7) What type of bonding occurs when atoms transfer electrons?
A
ionic
B
metallic
C
covalent
D
hydrogen
8) Will sulfur gain or lose electrons to achieve an octet?
A
lose
B
gain
9) How many electrons are involved when boron forms an ion?
A
3
B
2
C
5
D
1
10) What charge does the calcium ion have?
A
-2
B
+2
C
+1
D
-1
*select an answer for all questions
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