Chemistry Practice Review Questions!
(109).jpg "Chemistry Practice Review Questions!")
Are you a lover of chemistry? Are you aware of John Dalton, who introduced the atomic theory into chemistry? Everything around us is formed of atoms, and they are made of protons, neutrons, and electrons. Right from the water we drink to the ground on which we stand, is made of atoms. Charge yourself up and take the quiz; you will positively learn something. Take this practice review and bolster your knowledge.
- 1.What is matter?
- A.
Anything that has electrons
- B.
Anything that has mass and is made of atoms
- C.
Anything that has energy
- D.
Anything that is classified as a compound
- 2.Atoms are mostly space.
- A.
True
- B.
False
- 3.Atoms contain which of the following?
- A.
Neutrinos, Protons, Electrons
- B.
Neutrons, Protons, Electrolytes
- C.
Neutrinos, Proteins, Electrolytes
- D.
Neutrons, Protons, Electrons
- 4.What are the charges of the following particles (in order): Protons, Neutrons, Electrons
- A.
Positive, Negative, Neutral
- B.
Negative, Positive, Neutral
- C.
Positive, Neutral, Negative
- D.
Neutral, Positive, Negative
- 5.What does the atomic number of an element tells us?
- A.
The number of protons in the atom
- B.
The number of neutrons in the atom
- C.
Which group of the periodic table it is in
- D.
The number of valence electrons it has
- 6.A atom or molecule that has gained electrons to become negatively charged is called a ________?
- 7.The Valence of an atom tells us what?
- A.
How many protons it has
- B.
How many bonds it can form
- C.
Whether it has a charge or not
- D.
If it is a metal or non-metal
- 8.Which of the following ideas of John Dalton are still believed to be correct?
- A.
Atoms are solid.
- B.
Atoms in an element are all the same type of atom.
- C.
Atoms cannot be split into smaller particles.
- 9.Earnest Rutherford came up with the "Small Nucleus" model of the atom by firing positively charged particles at gold foil. What did he measure in this experiment?
- A.
How fast the particles traveled
- B.
How many of the particles were absorbed
- C.
How the particles were deflected
- D.
How many of the particles became negatively charged
- 10.How did Bohr change Rutherford's model of the atom?
- A.
He said that the electrons were concentrated in the centre of the atom (nucleus)
- B.
He said that electrons could only occupy specific energy levels as they orbit the nucleus
- C.
He said that the electrons could orbit the nucleus in a completely random way.
- 11.Mass number = the number of protons + the number of __________
- 12.An atom of magnesium has an atomic number of 12 and a mass number of 24. How many protons, neutrons, and electrons does it contain?
- A.
12 protons, 24 neutrons, and 12 electrons
- B.
12 protons, 12 neutrons, and 12 electrons
- C.
24 protons, 24 neutrons, and 12 electrons
- D.
24 protons, 24 neutrons, and 24 electrons
- 13.
![What is the atomic number of the atom below?
- ProProfs]( "What is the atomic number of the atom below?")
What is the atomic number of the atom below? - 14.
![What is the Mass number of the atom below?
- ProProfs]( "What is the Mass number of the atom below?")
What is the Mass number of the atom below? - 15.
![In the diagram below p = proton, n= neutron and the red dots are electrons.
Each of these atoms represent a different element. - ProProfs]( "In the diagram below p = proton, n= neutron and the red dots are electrons.
Each of these atoms represent a different element.")
In the diagram below p = proton, n= neutron and the red dots are electrons. Each of these atoms represent a different element.- A.
True
- B.
False
- 16.Isotopes are formed when an atom has the same number of protons but a different number of ______
- A.
Electrons
- B.
Neutrons
- C.
Particles
- D.
Quarks
.jpg "What is the atomic number of the atom below?")
.jpg "In the diagram below p = proton, n= neutron and the red dots are electrons.
Each of these atoms represent a different element."){kind=tracking}
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