WorksheetsChemistry Final Review
Total questions: 26
Worksheet time: 13mins
Which of the following is true about alkali metals?
They have 2 valence electrons
They are not reactive
They are highly reactive with water
They are gases at room temperature
How many valence electrons do noble gases have?
1
2
8
7
Which group on the Periodic Table contains elements with 7 valence electrons and highly reactive?
Alkali metals
Alkaline earth metals
Halogens
Transition metals
Which element has the largest atomic radius?
Oxygen
Sodium
Lithium
Flourine
Which of the following trends is correct across a period (left to right) on the Periodic Table?
Atomic radius increases
Electronegativity decreases
Ionization energy decreases
Atomic radius decreases
Which element has the highest electronegativity
Chlorine
Oxygen
Flourine
Nitrogen
What charge does a proton have?
Positive
Negative
Neutral
No charge
Where are electrons located in an atom?
In the nucleus
In the electron cloud
Around the protons
Around the neutrons
An ion is formed when an atom:
Gains or loses protons
Gains or loses neutrons
Gains or loses electrons
Forms a covalent bond
As the frequency of light increases, what happens to its energy?
Energy decreases
Energy stays the same
Energy increases
Energy fluctuates
Which of the following has the shortest wavelength?
Radio waves
Microwaves
Visible light
Gamma rays
The energy of light is inversely related to its:
Frequency
Amptitude
Wavelength
Color
Which of the following is used to calculate the average atomic mass?
The mass of the protons
The mass of each isotope and its abundance
The mass number only
The charge of the ion
If an element has two isotopes with masses of 10 amu and 12 amu, and their relative abundances are 25% and 75%, what is the average atomic mass?
11 amu
10.5 amu
12 amu
10.75 amu
What does the average atomic mass of an element represent?
The mass of the most abundant isotope
The mass of an atom in grams
A weighted average of all isotopes' masses
The number of protons and neutrons
Which law of thermodynamics explains that energy cannot be created or destroyed
Zeroth Law
First Law
Second Law
Third Law
What happens to the entropy of a system according to the Second Law of Thermodynamics?
It decreases over time
It remains constant
It increases over time
It becomes negative
The third law of thermodynamics states that as temperature approaches absolute zero, the entropy of a system:
Increases
Decreases
Becomes negative
Remains unchanged
Whats is the purpose of a colorimeter?
To measure the temperature of a substance
To measure the energy change during a process
To measure the volume of a substance
To measure the mass of a substance
In calorimetry, the heat transferred is calculated by measuring the change in:
Pressure
Volume
Temperature
Density
Which process is exothermic?
Melting ice
Burning wood
Boiling water
Evaporating water
Which of the following is a n endothermic process?
Freezing water
Condensation of steam
Sublimation of dry ice
Combustion of natural gas
In an exothermic reaction, energy is
Absorbed from the surroundings
Released to the surroundings
Stored in the chemical bonds
Converted into matter
If 50 g of water is heated from 20 C to 30 C, and the specific heat capacity of water is 4.18 J/g C, how much heat is absorbed?
418 J
2090 J
83.2 J
838 J
If 200 g of a substance has a temperature increase of 10 C and absorbs 400 J of heat, what is the specific heat capacity of the substance?
0.2 J/g C
0.4 J/g C
0.5 J/g C
2 J/g C
The specific heat capacity of copper is 0.39 J/g C. How much heat is needed to raise the temperature of 100 g of copper by 5 C
195 J
390 J
500 J
1000 J
