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