a starting material in a reaction

What is nuclear fission?

splitting a large nucleus into smaller ones

What does STP stand for in chemistry?

Standard Temperature and Pressure

the substance doing the dissolving

What is nuclear fusion?

combining small nuclei to form a larger nucleus

What is an electrolyte?

a solution that conducts electricity

What is a mole in chemistry?

a unit of substance amount (6.02 x 10²³ particles)

the time it takes for half of a radioactive substance to decay

What is the heat of fusion?

heat needed to melt a substance

a solution that resists pH change

What is enthalpy (ΔH)?

energy change in a chemical reaction

What is specific heat?

The heat needed to raise the temperature of 1 g of a substance by 1°C

What is the limiting reactant?

the reactant that is completely used up

What is percent yield?

actual yield divided by theoretical yield x 100%

a substance formed in a reaction

What is saturated solution?

a solution with excess undissolved solute

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CHEM FINAL QUIZ

45 termsStudBud Administration21 plays

Test your knowledge on protons, electrons, atomic numbers, and different types of chemical bonds in this engaging quiz.

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Questions 45

Answers

1
A radioactive isotope is used for diagnosing and treating illnesses in medicine.
False
True
2
What is a reactant?
a starting material in a reaction
an inhibitor
a product
a catalyst
3
What is nuclear fission?
splitting a large nucleus into smaller ones
releasing energy without any reaction
combining small nuclei into larger ones
forminga solid from a solution
4
What does STP stand for in chemistry?
Standard Temperature and Percent
Standard Time and Pressure
Standard Temperature and Pressure
Standard Titration Protocol
5
What is a solvent?
the substance doing the dissolving
the substance being dissolved
a solid that does not dissolve
a chemical with a pH above 7
6
What is a polar bond?
Equal sharing of electrons
No bond
Between metals
Unequal sharing of electrons
7
What is nuclear fusion?
a type of chemical bond
a reaction that absorbs heat
splitting a large nucleus into smaller ones
combining small nuclei to form a larger nucleus
8
The value of standard pressure is 1 atm
True
False
9
What type of reaction absorbs heat?
decomposition
endothermic
combustion
exothermic
10
What is the pH of a neutral solution?
7
0
10
14
11
What is an electrolyte?
a gas that dissolves in water
a solid that conducts electricity
a non-conductive solution
a solution that conducts electricity
12
In a balanced chemical equation the number of atoms of each element must be equal on both sides.
True
False
13
Exothermic reactions release heat
True
False
14
What type of bond is formed when electrons are shared?
Hydrogen
Ionic
Metallic
Covalent
15
What is a mole in chemistry?
a unit of mass
a unit of temperature
a unit of substance amount (6.02 x 10²³ particles)
a type of reaction
16
What is a half-life?
the time it takes for a substance to dissolve
the time for a substance to freeze
the time required to double the mass of a substance
the time it takes for half of a radioactive substance to decay
17
What is the SI unit for energy?
Volt
Calorie
Watt
Joule
18
What is the heat of fusion?
heat needed to vaporize a substance
heat absorbed during condensation
heat released during freezing
heat needed to melt a substance
19
An electron has a positive charge.
True
False
20
What is the value of standard temperature?
25°C or 298 K
0°C or 273 K
-273°C or 0 K
100°C or 373 K
21
What type of radiation has the greatest penetrating power?
beta particles
gamma rays
alpha particles
neutrons
22
What is a buffer?
a solution that changes pH easily
a strong acid
a weak base
a solution that resists pH change
23
The formula for calculating pH is -log[H⁺]
False
True
24
What is enthalpy (ΔH)?
energy change in a chemical reaction
temperature change in a reaction
the volume of a solution
the density of a gas
25
What is the charge of a proton?
Positive
Negative
No charge
Neutral
26
What is the center of an atom called?
Shell
Nucleus
Proton zone
Electron cloud
27
The law of conservation of mass means that mass is conserved in reactions.
False
True
28
What is the pH range of an acid?
0 - 7
Only 7
7 - 14
0 - 14
29
What type of reaction is A+B→AB
Decomposition
Single Replacement
Synthesis
Combustion
30
NaCl has an Ionic bond type.
False
True
31
Elements in the same column of the periodic table have similar:
Atomic masses
Atomic numbers
Properties
Proton numbers
32
What is Boyle's Law?
P1V1 = P2V2
PV = nRT
V1/T1 = V2/T2
P/T = constant
33
Which subatomic particle has no charge?
Proton
Electron
Neutron
Nucleus
34
What is specific heat?
The heat absorbed during a reaction
The heat released during a reaction
The heat needed to melt 1 g of a substance
The heat needed to raise the temperature of 1 g of a substance by 1°C
35
What is the formula for calculating molarity?
Volume/Mass
Liters/Moles
Grams/Liters
Moles/Liters
36
Which is not a characteristic of an acid?
bitter taste and slippery feel
sour acid
no reaction with metals
produces H+ ions
37
What type of bond is formed when electrons are transferred?
Ionic
Covalent
Hydrogen
Metallic
38
What is Charles's Law?
P1V1 = P2V2
V1/T1 = V2/T2
PV = nRT
P/T = constant
39
Which of the following is a noble gas?
Nitrogen
Hydrogen
Krypton
Oxygen
40
What is the limiting reactant?
the fastest reacting substance
the reactant that is completely used up
the reactant that is left over
the reactant that produces the most product
41
What is a solute?
the substance doing the dissolving
a chemical with a pH above 7
the substance being dissolved
a solid that does not dissolve
42
What is percent yield?
total product formed
moles of reactant used
theoretical yield divided by actual yield
actual yield divided by theoretical yield x 100%
43
A catalyst is a substance that slows down a reaction.
True
False
44
What is a product?
a starting material in a reaction
an enzyme
a catalyst
a substance formed in a reaction
45
What is saturated solution?
a solution with excess undissolved solute
a solution with a pH above
a solution that can dissolve more solute
a solution with no solute

CHEM FINAL QUIZ Flashcards | StudBud