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Ap Chemistry 1st Term
Test Description: First term Ap Review game
Instructions: Answer all questions to get your test result.
1) What is the difference between the previous models of the atom and the modern quantum mechanical model?
A
The quantum mechanical model allows us to pinpoint the exact location of electrons.
B
The quantum mechanical model has cookies
C
The quantum mechanical model is based on defined orbits rather than probability.
D
The quantum mechanical model is based on probability rather than defined orbits.
2) An orbital is defined as_____
A
A region of space in which there is a high probability of finding an electron.
B
A defined distance from the center of the nucleus where the electron will be found.
C
A brand of gum that gives a good clean feeling.
D
A place where the nucleus is always found.
3) Carbon–13 and Carbon–14 are considered to be __________ because of the differing number of neutrons.
A
elements
B
isotopes
C
protons
D
atoms
4) Which statement is true about an element when adding or removing protons from the nucleus of an atom?
A
an isotope is created
B
creates an identical element
C
creates a different element
D
an ion is created
5) According to the periodic table, which of the following elements contains more neutrons?
A
Ni
B
Co
C
Fe
D
Mn
6) How many significant figures are there in 0.000 908 000 mL?
A
42
B
6
C
3
D
10
7) Picture two hydrogen atoms. The electron in the first hydrogen atom is in the n=1 level. The electron in the second hydrogen atom is in the n=4 level. Which atom can emit electromagnetic radiation
A
The second atom
B
Both atoms can
C
Neither only superman can emit electromagnetic radiation.
D
The first atom
8) The photon of light that excites an electron
A
Has less energy than the photon which exits the electron
B
Is always red
C
Has more energy than the photon which exits the electron
D
Has the same amount of energy as the photon which exits the electron
9) Which of the following BEST describes the way compounds are formed?
A
atoms of different molecules are bonded together
B
atoms of the same molecules are bonded together
C
atoms of the same elements are bonded together
D
atoms of different elements are bonded together
10) Which of the following elements is not considered one of the six most common elements in living organisms?
A
Phosphorus
B
Sulfer
C
Nitrogen
D
Helium
11) The compound NaCl (table salt) is a solid at room temperature. It is composed of Sodium and Chlorine. Sodium and Chlorine are typically what phase at room temperature?
A
Sodium....Gas Chlorine....Gas
B
Sodium....Liquid Chlorine....Gas
C
Sodium....Solid Chlorine.....Gas
D
Sodium....Solid Chlorine....Solid
12) Definite evidence for a chemical reaction occurring would be a change in __________.
A
density
B
temperature
C
the state of matter
D
the substances present
13) Photosynthesis is the process by which plants use carbon dioxide, water, and energy from the sun to form oxygen and energy–rich sugar molecules. In this reaction, oxygen and energy–rich sugar molecules are the only __________.
A
wastes
B
products
C
reactants
D
gases
14) Generally what is the relationship between first and second ionization energy.
A
Second ionization energy is greater than first ionization energy
B
The ionization energies should be equal
C
First ionization energy is greater than second ionization energy
D
There is no relationship between energies
15) The valence electrons in an atom of Sodium in the ground state are all found in
A
third orbital
B
second orbital
C
first orbital
D
fourth orbital
16) Which of the following statements is true regarding compounds?
A
A compound does not have to resemble the elements it is composed of.
B
Compounds retain the properties of the elements they are composed of.
C
Compounds are the simplest form of an element that retains the properties of the element.
D
Compounds are composed of two or more atoms from the same element.
17) When two different elements react chemically, the products of the reaction will most likely
A
have the same chemical and physical properties as the original elements.
B
have a mixture of the chemical and physical properties of the original elements.
C
have different chemical and physical properties than the original elements.
D
have a greater total mass than the mass of the original elements.
18) What is the molar mass (mass of one mole) of Methane gas CH4?
A
13 grams
B
13.008 grams
C
16.042 grams
D
9 grams
19) What is the molecular weight (molar mass) of Mn2Se7
A
143.8 grams/mol
B
662.6 grams/mol
C
331.3 grams/mol
D
287.6 grams/mol
20) How many moles are in 68 grams of copper (II) hydroxide, Cu(OH)2
A
.35 moles
B
1 mole
C
.70 moles
D
1.4 mole
*select an answer for all questions
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