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Chemistry Question Set for Nationals Flashcards | StudBud
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Chemistry Question Set for Nationals
Chemistry Question Set for Nationals
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This Quiz was made using the 2024-2025 color sets for the National Science Bee.
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Questions
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Answers
1
What is the main ore of tin?
Bauxite
Cassiterite
Magnetite
Hematite
2
What is the chemical symbol for Silver?
Sr
Si
Ag
Sv
3
Which element is the fifth most abundant in the universe?
Helium
Carbon
Neon
Hydrogen
4
The Bunsen burner is primarily used to
Produce an open flame
Cool substances
Filter liquids
Mix chemicals
5
What was the main goal of alchemy?
To develop modern laboratory techniques
To create new elemnets
To turn common metals into gold or silver
To discover new chemical reactions
6
Which scientist is credited with developing the periodic table of elements?
Marie Curie
Dmitri Mendeleev
Louis Pasteur
Albert Einstein
7
What is combustion primarily known for releasing during a chemical reaction?
Sound and pressure
Magnetism and electricity
Heat and light
Motion and gravity
8
Which property best describes a chemical element that rarely reacts with others?
Magnetic
Noble
Reactive
Unstable
9
Carbon monoxide contains how many different types of atoms?
3
2
4
1
10
What is neon commonly used for?
Creating bright signs and lights
Making balloons float
Cleaning products
Powering cars
11
What makes carbon monoxide (CO) a diatomic compound?
It contains three different atoms
It contains two atoms bonded together
It contains only carbon atoms
It contains four oxygen atoms
12
What is the atomic number of carbon?
12
14
8
6
13
Who developed the process of pasteurization?
Louis Pasteur
Thomas Edison
Albert Einstein
Marie Curie
14
On the pH scale, which number indicates the most acidic substances?
10
14
7
0
15
What branch of chemistry studies compounds containing carbon?
Inorganic Chemistry
Nuclear Chemistry
Organic Chemistry
Physical Chemistry
16
What metal combines with copper to form bronze?
Aluminum
Iron
Tin
Silver
17
What color is chlorine gas?
Blue-green
Yellow-green
Clear
Red-green
18
What is sublimation?
When a solid turns directly into a gas
When a solid melts into a liquid
When a gas turns into a liquid
When a liquid turns into a gas
19
Which element is most abundant in the universe?
Helium
Carbon
Hydrogen
Oxygen
20
What important role does carbon play in nature?
It creates magnetic fields
It causes ocean currents
It forms the basic of all known life
It makes the sky blue
21
What process developed by Louis Pasteur helps destroy microorganisms in food?
Pasteurization
Fermentation
Crystallization
Distillation
22
What does pH measure?
The weight of molecules
How acidic or basic a substance is
Temperature of substances
How fast chemicals react
23
What is organic chemistry mainly about?
Compounds containing carbon
Plant materials
Natural foods
Living things only
24
What is Gilbert N. Lewis known for in chemistry?
Discovering radioactivity
Classifying acids and bases
Creating the periodic table of elements
Inventing the thermometer
25
Which of these is NOT a characteristic of carbon?
It is studied in organic chemistry
It is the most abundant element in the universe
It forms the basis of all known life
It has an atomic number of 6
26
During filtration, what happens to a mixture?
Liquid turns into gas
Solid participles are separated from liquid
It changes temperature
It changes color
27
Which process would you use to remove coffee grounds from liquid coffee?
Filtrating
Cooling
Heating
Burning
28
Which of the following is the most electrically conductive element?
Neon
Chlorine
Silver
Win
29
What number on the pH scale is considered neutral?
7
0
14
3
30
Which statement about liquids is true?
They have no volume
They have a fixed shape
They are always clear
They take the shape of their container
31
What type of reaction is combustion classified as?
Endothermic reaction
Neutral reaction
Nuclear reaction
Exothermic reaction
32
What symbol represents tungsten on the periodic table?
Tn
W
Tu
T
33
What is a common use of chlorine?
Making plastic
Cleaning windows
Purifying gold
Treating swimming pools
34
What is the chemical symbol for Neon?
Ne
Xe
N
Nn
35
What is arsenic classified as?
A carcinogen
A vitamin
A noble gas
A protein
36
What is pasteurization used for?
Making food taste better
Making food last forever
Killing harmful microorganisms in food
Making food look better
37
Why is Robert Bunsen's name important in chemistry laboratories?
He developed chemical symbols
He created the Bunsen burner
He discovered a new element
He invented the microscope
38
Why are substances like water and honey called liquids?
Because they flow quickly
Because they have fixed volume but no fixed shape
Because they have both fixed shapes and volume
Because they are wet
39
According to the pH scale, substances closer to which number are more basic?
10
0
7
14
40
Which best describes what a carcinogen is?
A noble gas
A cancer-causing agent
A helpful vitamin
A type of metal
41
In incandescent light bulbs, what metal is used for the filament?
Copper
Gold
Silver
Tungsten
42
What is the primary use of neon?
Medical equipment
Space rockets
Car engines
Fluorescent lamps and signs
43
Which statement best describes noble gases?
They are highly explosive
They are very reactive with other elements
They rarely react with other elements
They exist only in liquid form
