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8th Grade Chemistry Vocabulary Flashcards | StudBud
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8th Grade Chemistry Vocabulary
8th Grade Chemistry Vocabulary
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Answers
1
What does
mass
measure?
The speed of an object
The weight of an object
The size of an object
The amount of matter in an object
2
What does the term "
proportion
" refer to?
The relationship between the sizes of different particles
The number of neutrons in the nucleus
The number of atoms in a molecule
The charge of an atom
3
What does a
scale
of 1:100 represent?
An object is 100 times larger than its real-life size
The object has no real size
The object is exactly the same size as in real life
An object is 100 times smaller than its real-life size
4
What information is shown on the
periodic table
?
The number of molecules in a compound
Atomic numbers, electron configurations, and chemical properties ofelements
The mass of all atoms
The number of atoms in a molecule
5
What is the charge of an
electron
?
Positive
Neutral
No charge
Negative
6
What does the
nucleus
of an atom contain?
Only electrons
Protons, neutrons, and electrons
Only neutrons
Protons and neutrons
7
What does
The Law of Conservation of Mass
state?
Matter is neither created nor destroyed in a chemical reaction
Mass increases during a reaction
Matter is destroyed in a chemical reaction
Matter is created during a chemical reaction
8
What is true about a
neutron
?
It has a positive charge and is found in the nucleus
It has no charge and is found in the nucleus
It orbits the nucleus and has a negative charge
It has a negative charge and is found in the nucleus
9
What does it mean to
conserve
something?
To increase its size and value
To carefully preserve and protect something
To recycle it after use
To destroy something slowly
10
Who was Dmitri Mendeleev?
A physicist who studied black holes
The first person to weigh an atom
A Russian chemist who developed the periodic table
A scientist who discovered atoms
11
What is true about a
proton
?
It has a positive charge and is located inside the nucleus
It has a negative charge and is located outside the nucleus
It has a negative charge and is located inside the nucleus
It has no charge and is inside the nucleus
12
Which of the following best describes a
molecule
?
Two or more atoms that are chemically bonded
A group of protons and neutrons
One single atom
A large substance that cannot be divided
13
What does "
quantity
" refer to?
The speed of a moving object
The relationship between different objects
The size of an object
The total amount or number of something
14
What is an
atom
?
Smallest unit of matter that retains the chemical properties of an element
The largest particle in the universe
A particle that can be divided into smaller parts
A type of molecule found in plants
15
Which of the following best defines an
element
?
A molecule that changes during a reaction
A combination of different atoms
A pure substance made of only one kind of atom
A substance made of two or more atoms
