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Chemistry Review
Chemistry Review
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8th Grade Chemistry
Flashcards
30 cards
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Practice quiz
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Host live
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Questions
30
Answers
1
How many Neutrons does Boron (B) have?
7
6
4
5
2
Crayon Art: Chemical or Physical Change?
Physical Change
Chemical Change
3
Is milk turning sour a chemical or physical change?
Chemical
Physical
4
What are the 3 states of matter?
Protons, Neutrons, and Electrons
Solids, Liquids, and Gases
Elements, Compounds, and Molecules
5
SnO
2
+ 2H
2
→ Sn + 2 H
2
O - Chemical or Physical Change?
Chemical Change
Physical Change
6
What charge does an electron have?
Positive (+1)
Neutral (0)
Negative (-1)
7
How many neutrons does Hydrogen (H) have?
2
0
3
1
8
Solid, Liquid, or Gas?
Gas
Liquid
Solid
9
How many electrons does Calcium (Ca) have?
40
20
8
2
10
Boiling Water: Chemical or Physical Change?
Physical change
Chemical change
11
What charge does a Neutron have?
Neutral (0 or no charge)
Negative (-1)
Positive (+1)
12
What is the atomic mass of Carbon (C)
6
7
12
2
13
Kinetic Molecular Theory (KMT) states that when atoms increase in temperature, they _______
Move slower
Move faster
Don't change in speed
14
What charge does a proton have?
Negative (-1)
Neutral (0)
Positive (+1)
15
Burning wood: Exothermic or Endothermic Chemical Reaction?
Endothermic Reaction
Exothermic Reaction
16
An instant ice pack is what type of chemical change?
Exothermic
Endothermic
17
Which of the following is NOT an indication that a chemical reaction is taking place?
Temperature change
Color change
It breaks
A precipitate (solid) is formed
18
Which parts of the atom are located within the nucleus?
Neutrons and Electrons
Protons and Electrons
Protons and Neutrons
19
Solid, Liquid, or Gas?
Gas
Liquid
Solid
20
Chemical or physical change?
Chemical change
Physical Change
21
Atomic number of the element Lithium?
2
4
1
3
22
How many Neutrons does Oxygen (O) have?
10
8
16
9
23
Using a blender to make a smoothie: Chemical or Physical change?
Physical Change
Chemical Change
24
Is Titanium (Ti) an element or compound?
Compound
Element
25
Which element has 94 protons?
Phosphorous (P)
Plutonium (Pu)
Platinum (Pt)
Lead (Pb)
26
Mixing Sodium Nitrate and Water (gets colder)
Exothermic Reaction
Endothermic Reaction
27
Solid, Liquid, or Gas?
Gas
Solid
Liquid
28
Is Vinegar (CH
3
COOH) an element or compound?
Element
Compound
29
Which parts of the atom contributes most to its atomic mass?
Electron and Neutron
Proton and Electron
Proton and Neutron
30
Is Helium (He) an Element or Compound?
Compound
Element
