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Chemistry Final Exam Review and Random Trivia Flashcards | StudBud
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Chemistry Final Exam Review and Random Trivia
Chemistry Final Exam Review and Random Trivia
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Questions
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Answers
1
There are 118 elements on the periodic table of elements
True
False
2
The products in this reaction are
NaCl & CaCO3
Na2CO3
3
Substances that change color in the presence of acids and bases are called enzymes.
True
False
4
Carbon-14 is useful in radio dating very young fossils?
True
False
5
Which
does not
speed up the rate of a reaction?
catalysts
inhibitors
6
Na + H
2
O --> NaOH + H
2
Does not follow the Law of Conservation of Mass
Follows the law of conservation of Mass
7
What reaction releases energy into its surroundings?
endothermic
exothermic
8
Babies have more bones than adults.
False
True
9
NH
4
+
NO
2
--> N
2
+ H
4
O
Does not follow the Law of Conservation of Mass
Follows the Law of Conservation of Mass
10
Which is an example of evidence that shows a chemical reaction took place?
light was given off
there was a change in state of matter
11
In a solution, the solvent does the dissolving of the solute.
False
True
12
Avogadro's number is the same for every atom and compound
True
False
13
Sodium reacts Chlorine yields Sodium Chloride is correctly represented by the equation Na + Cl ---> NaCl
False
True
14
The molar mass of any element is found on the periodic table and is called the atomic mass.
True
False
15
The 100 folds in a chef's hat represent 100 ways to cook an egg.
True
False
16
C
8
H
9
NO
2
Has 20 atoms
Has 4 atoms
17
Reactants are found
on the right side of the arrow
On the left side of the arrow
18
It can rain diamonds on other planets
True
False
19
An equation is balanced by
changing subscripts
adding coefficients
20
Boyle's law is an inverse law and Charles's law is a direct proportion law.
True
False
21
In a chemical reaction mass is conserved. This means that
The mass of the products is twice as the mass of reactants
# and type of atoms are the same for reactants and products
22
The boiling point of water is 100 degrees celcius
False
True
23
In a chemical reaction
The atoms of the reactants always stay together
The atoms of the reactants rearrange to form products
24
J and Q are the only two letters that don’t appear in the periodic table.
False
True
