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Basics of Chemistry Review Flashcards | StudBud
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Basics of Chemistry Review
Basics of Chemistry Review
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#Chemistry Review
Flashcards
34 cards
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Practice quiz
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Questions
34
Answers
1
As the temperature increases, the speed of molecules ....
stays the same
decreases
increases
it is impossible to say for sure
2
what do we call a negative ion?
positive ion
anion
cation
paws-itive ion
3
the elements in the upper right corner of the periodic table are the
alkali metals
transition metals
nonmetals
Metalloids
4
How would you describe the particles in a liquid?
vibrating
all spread out
slide around each other
moves rapidly
5
What does a subscript do in a chemical formula?
Its the same as an exponent
It tells how many atoms of that element are in a compound.
It is used to balance chemical equations
It gives the number of elements in a mixture.
6
In which state of matter are the particles moving the fastest?
solid
liquid
gas
7
When a gas changes into a liquid, it is called...
vaporization
melting
condensation
freezing
8
Protons are attracted to other protons.
False
True
9
The atomic number is...
the number of protons
the number of neutrons
the number of electrons
10
What is the number of electrons in Al
3+
?
10
13
3
16
11
How many neutrons are in calcium-40?
19
20
22
21
12
What element has the chemical symbol Au?
aurium
platinum
gold
silver
13
What is the charge of an electron?
neutral
no charge
negative
positive
14
When a liquid changes into a gas, it is called...
melting
condensation
freezing
vaporization
15
Chemistry is the study of...
molecules and thermodynamics
energy and black holes
matter and the changes of matter
atoms and organisms
16
In which state of matter are the particles moving the slowest?
liquid
gas
solid
any state in the south
17
What is an element?
The most pure form of matter
a compound
a molecule
a homogeneous mixture
18
A normal atom with an equal amount of protons and electrons has a charge of...
What's a charge again?
zero, neutral
negative
positive
19
What element is this?
sodium
carbon
boron
oxygen
20
In a chemical reaction, the reactants are
above the arrow
on the left side of the arrow
on the right side of the arrow
the catalysts
21
How would you describe the particles in a solid?
slide around each other
moves rapidly
all spread out
tightly packed
22
What is the atomic mass of krypton?
84 g
120 g
49 g
36 g
23
What is the ratio of atoms in the chemical formula CaCl
2
?
3:3
1:1:2
2:1
1:2
24
What two particles are found in the nucleus?
just the electrons
proton and neutron
neutron and electron
proton and electron
25
why is chemistry so much fun?
because of the element of surprise
because of all the math
because of all the chemistry puns
when the teacher tells a joke, he doesn't get a reaction.
26
Isotopes are atoms of the same element that have....
different numbers of neutrons
different numbers of electrons
different numbers of protons
27
What makes an atom neutral?
the attraction of the protons to the electrons
the protons (+) cancel out the electrons (-)
the neutrons have no charge
protons and neutrons cancel each other
28
How would you describe the particles in a gas?
all spread out
tightly packed
close together
vibrating
29
Everything in the universe is made of matter and
energy
thought
atoms
molecules
30
how does oxygen become an ion?
Gains 2 electrons
Gains an electron, e-
Loses an electron, e-
loses 2 electrons
31
What is a compound?
a type of sentence with two independent clauses
two or more protons
a place where people in a cult live together
two or more elements bonded together
32
Atoms are...
have e- that orbit like planets
full of empty space
electrically neutral
the smallest unit of matter
33
what is the atomic mass of Sodium?
11 g
12 g
1 g
23 g
34
What is the atomic mass of gold?
118 g
196.967 g
79 g
276 g
