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8th Grade Chemistry Part 1 Flashcards | StudBud
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8th Grade Chemistry Part 1
8th Grade Chemistry Part 1
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Chapters 2-4 Review
Flashcards
49 cards
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Practice quiz
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Questions
49
Answers
1
The periodic table has how many periods (not including the bottom 2 sections)?
5
13
2
7
2
A bond between 2 nonmetals is called what? (ex. H2, H2O, CH4)
Covalent bond
Triple bond
Ionic bond
Double bond
3
What is the electric charge of an electron?
No charge
Positive
Negative
Both positive and negative
4
What state of matter are these particles?
Gas
Liquid
None
Solid
5
What is the atomic number of Carbon?
13
6
12
12.011
6
How many electrons can the inner most shell of an electron hold maximum?
4
8
1
2
7
Covalent bonds form what?
Molecules
Neutrons
Ions
Electrons
8
The element Magnesium is made up of what?
Chlorine and magnesium atoms
Magnesium atoms
Homogenous mixtures
Multiple compounds
9
When 1 element takes electrons from another element, what type of bond forms?
Covalent bond
Double bond
Nonpolar bond
Ionic bond
10
Where are negatively charged subatomic particles found in an atom?
Nucleus
Mitochondria
Plasma Membrane
Electron Cloud
11
What is the number 54 on this element from the periodic table?
Group Number
Atomic Mass
Row Number
Atomic Number
12
Metals are found on which side of the periodic table?
Middle
Right side
Left side
Bottom row
13
What state of matter are these particles?
Solid
Liquid
Gas
Solid and Liquid
14
What kind of change takes place when ice melts?
Physical change
No change
Reactive change
Chemical change
15
What state of matter are these particles?
Gas
Liquid
Liquid and Gas
Solid
16
The periodic table is made up of what?
Solutions
Compounds
Elements
Mixtures
17
A combination of two or more elements is called a what?
Element
Compound
Atom
Molecule
18
Ionic bonds form between what 2 kinds of elements?
2 metals
1 nonmetal and 1 metal
2 nonmetals
1 metalloid and 1 nonmetal
19
Which bond occurs when electrons are shared between 2 elements?
Triple bond
Ionic Bond
Polar bond
Covalent bond
20
How many neutrons are in Aluminum?
26.982
13
27
14
21
Atoms tend to be more stable when?
When they have 3 valence electrons
When they are an even number on the periodic table
When they have 8 valence electrons
They have more neutrons than protons
22
How many Hydrogen atoms are in the compound H2O (water)?
1
3
2
0
23
What is the atomic mass of Carbon?
13
6
12.011
12
24
If Chlorine (Cl) has 8 electrons in its outer shell, is it stable?
Yes
Maybe
I don't know
No
25
What does the atomic number ALWAYS tell you about an atom?
The number of neutrons
The radioactivity
The number of protons in the nucleus
The number of protons and electrons combined
26
Electron dot diagrams show what in an atom?
All electrons
Valence electrons
Neutrons
Protons
27
An isotope of an atom has the same number of protons, but a different number of what?
Neutrons
Electrons
Symbols
Protons
28
How many protons are in Oxygen?
15
0
16
8
29
If a neutral atom loses a positively-charged proton, what would the overall charge be?
Neutral
Positive
Negative
30
How many protons are in Aluminum?
14
27
26
13
31
What does the number 131.293 tell you about Xe?
Atomic Weight/Mass
Atomic Number
Mass Number
Atomic Symbol
32
Which subatomic particle has a positive charge?
Proton
Neutron
Electron
Nucleus
33
Valence electrons are located where in an atom?
Outside the electron cloud
On the nucelus
In the nucleus
On the outer-most shell of the electron cloud
34
Which subatomic particle has the smallest mass?
Neutron
Proton
They are all the same
Electron
35
Matter is something that...
Takes the shape of its container
Has mass and takes up space
Weighs over 1 lb.
Produces heat
36
What type of change occurs if a precipitate (solid matter) forms?
Reactive Change
Chemical Change
Physical Change
No Change
37
The far right side of the periodic table consists of these.
Alkaline
Metals
Noble gases
Metalloids
38
What 2 subatomic particles are found in the nucleus of an atom?
Proton
Chromatin
Electron
Neutron
39
What kind of change is represented by bubbles forming?
No change
Physical change
Reactive change
Chemical change
40
What is the name of an element with properties of both metals and nonmetals?
Plasma
Nonmetal
Metalloid
Metal
41
What type of bond forms between Na and Cl? ( 1 metal, 1 nonmetal)?
Ionic
Triple bond
Covalent
No bond forms
42
The reactants and products of a chemical equation must be equal. What law states this fact?
The second law of gravity
The first law of gravity
The law of inertia
The law of conservation of mass
43
Tearing a piece of paper is an example of what kind of change?
Chemical Change
No Change
Physical Change
Reactive Change
44
What does the Law of Conservation of Mass state?
Mass is neither created nor destroyed in a reaction
Physical changes use less energy than chemical changes
An object at rest stays at rest
Products always have more mass than reactants
45
How many neutrons are in Oxygen?
16
7
6
8
46
When two or more atoms of the same element combine together, we call them what?
Molecules
Heterogenous mixtures
Elemental compounds
Solutions
47
Rust forming is a sign of what kind of change taking place?
Physical Change
No change
Chemical change
Reactive Change
48
The atomic weight/mass of an atom is the combined weight of what subatomic particles?
Proton and Neutrons
Protons and Valence Electrons
Electrons and Protons
49
I am definitely going to get an A on this chemistry quiz.
I need to study a lot more
Yes, for sure
50/50
I think so
