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Chemistry Test Prep! Flashcards | StudBud
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Chemistry Test Prep!
Chemistry Test Prep!
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This quiz is on the first 5 weeks in SCIENCE!
Flashcards
47 cards
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Practice quiz
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Questions
47
Answers
1
A sandwich digesting in your stomach your body uses for energy is
Your body only has chemical reactions
A chemical change
Your body doesn't have chemical reactions
A physical change
2
Pseudoscience means:
False Science
True Science
Good science, great science, best science
3
How can you separate water and salt?
Boil the salt off and you're left with water
Boil the water off and you're left with salt
4
What happens to cornstarch when oxygen and fuel are added to it?
It catches on fire!
nothing
5
Which part of the atom allows it to bond with other atoms
The electrons in the electron shell
The protons
Magic
The nucleus
6
A common element is H20
H20 is a compound
False
True
118
7
An old bicycle rusting away in the rain is:
A chemical change
Metals don't go through chemical changes
A physical change
8
The atomic number is also the number of:
electrons and neutrons
the atomic mass
neutrons and protons
protons and electrons
9
Most of the mass in an atom is in:
the electron shells
The nucleus
It's spread out evenly
10
Gas is matter too!
True
False
11
Science MUST be:
Ideas, philosophies, religions
Love, feelings, emotions
Testable, Repeatable, Objective
Guessing, Beliefs, Opinions
12
How many examples of atoms are there?
12
118
24
48
13
A chemical change will:
Always end in a giant hollywood explosion
Always have a reaction (ex. Gas, explosion, smell, temperature change)
Sometimes happens secretly
Always make Ms. Matzen upset
14
How many electrons fit in the first electron shell? How many in the second electron shell?
3 and 9
14 and 24
2 and 6
2 and 8
15
This is an example of a molecule
H20
NaCl
Na
Cl
16
Protons and neutrons go where?
In the center nucleus
All over!
On the outside
17
Why can't you trust an atom?
They make up everything
The hold the keys to life
They are all up in your business
18
If an atom has 6 protons and 6 neutrons, what is its atomic mass? What is it's atomic number?
16 and 12
12 and 6
18 and 9
6 and 12
19
An atom is:
Some are visible to the human eye but most are not
The smallest thing you can call life
The smallest thing there is
The smallest thing you can call matter
20
Elements in Period 1 are all very reactive because:
They only have 1 electron in their outer shell when they want 8
Because of science
They don't have enough neutrons in the nucleus
They don't have enough protons in the nucleus
21
Horoscopes are considered science
True
False
22
Diamonds, charcoal, Graphite are all made entirely of which element
Lead
Copper
Gold
Carbon
23
What attracts iron filings
salt
water
magnets
sand
24
Bases taste sour
True
False
25
Why didn't the cornstarch catch fire when it was just sitting on the paper?
the fire wasn't on it for long enough
The student holding the paper didn't want it to
Ms. Matzen didn't want it to
There wasn't enough oxygen present
26
Measuring the length of a twizzler is an example of a:
Better than nothing
Qualitative Observation
Quantitative Observation
27
A log burning and turning into ashes and Carbon dioxide is a physical change:
True
False
28
If there are 4 Carbon atoms at the beginning of a reaction:
They will probably be destroyed forever
There will be 4 carbon atoms at the end of a reaction
There will be 8 at the end
Then who cares!
29
We use bases for:
plants
In food
paper making
Cleaning
30
A molecule is:
1 atom
The same as an alloy
2 or more atoms bonded
31
Organisms are bigger than Organ Systems
False
True
32
Something with the pH of 11 is very Basic
False
True
33
Something with a pH of 2 is very basic:
False
True
34
A physical change:
Always ends in a big explosion
Can always be reversed
Doesn't permanently change the substance
35
If an element has 6 protons, how many electrons does it have?
12
3
9
6
36
Something with the pH of 7 is:
Basic
Neutral
Acidic
Neither
37
A solid goes to a liquid with:
Adding heat (energy)
Adding a base
Breaking it up
Adding an acid
38
A theory in science is:
A repeatable natural phenomenon
A guess
Something that the science police enforce
An explanation of a repeatable natural phenomenon
39
What gas was released from Lake Nyos?
Hydrogen
Methane
Carbon Dioxide
40
A Law in Science is:
Something the science police enforce
An explanation of a repeatable natural phenomenon
A guess
A repeatable natural phenomenon
41
Which elements are most common in living things:
Neon, Francium, Copper
Carbon, Oxygen, and Hydrogen
Sodium, Nickle, Gold
Carbon, Einsteinium, and Sodium
42
The Law of Conservation of Matter States:
Matter can never be created or destroyed
You matter
Matter is destroyed when it turns into gas
Gas is weightless
43
Diamonds, Coal, and all living things have this element in common
Carbon
Oxygen
Hydrogen
Selenium
44
This is an example of a common Element
Oganesson (Og)
Water (H2O)
Sodium (Na)
Carbon Dioxide (CO2)
45
Acids tast sour
True
False
46
Water heating up and turning into steam is a:
Physical Reaction
Chemical Reaction
47
The first element on the periodic table is
Carbon
Neon
Oxygen
Hydrogen
