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ATI TEAS VERSION 7 LATEST ACTUAL CHEMSITRY PRACTICE Q & A WITH RATIONALES 2024
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ATI TEAS VERSION 7 LATEST ACTUAL CHEMSITRY PRACTICE Q & A WITH RATIONALES 2024
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ATI TEAS VERSION 7LATEST ACTUAL
CHEMISTRY PRACTICE
Q & A w/ RATIONALES
2024
,1. What is the term for the number of protons in the nucleus of an atom?
A) Atomic number
B) Mass number
C) Isotope number
D) Ion number
Answer: A) Atomic number. The atomic number is the unique identifier of an element and determines its
chemical properties.
2. What is the term for atoms of the same element that have different numbers of neutrons?
A) Atomic variants
B) Mass variants
C) Isotopes
D) Ions
Answer: C) Isotopes. Isotopes have the same atomic number but different mass numbers due to different
numbers of neutrons.
3. What is the term for atoms that have gained or lost electrons and have a net electric charge?
A) Atomic charges
B) Mass charges
C) Isotopes
D) Ions
Answer: D) Ions. Ions have unequal numbers of protons and electrons, resulting in a positive or negative
charge.
4. What is the name of the horizontal rows in the periodic table?
A) Groups
B) Periods
C) Families
D) Series
Answer: B) Periods. Periods indicate the number of energy levels or shells that an atom has.
5. What is the name of the vertical columns in the periodic table?
A) Groups
B) Periods
C) Families
D) Series
Answer: A) Groups. Groups indicate the number of valence electrons or outermost electrons that an
atom has.
6. What is the term for the attraction between atoms that share one or more pairs of electrons?
A) Ionic bond
B) Covalent bond
C) Metallic bond
D) Hydrogen bond
Answer: B) Covalent bond. Covalent bonds form when atoms share electrons to achieve a stable octet or
duet configuration.
7. What is the term for the attraction between atoms that transfer one or more electrons from one to
another?
A) Ionic bond
B) Covalent bond
, C) Metallic bond
D) Hydrogen bond
Answer: A) Ionic bond. Ionic bonds form when atoms transfer electrons to achieve a stable octet or duet
configuration, resulting in oppositely charged ions that attract each other.
8. What is the term for the attraction between metal atoms that pool their valence electrons into a sea
of electrons?
A) Ionic bond
B) Covalent bond
C) Metallic bond
D) Hydrogen bond
Answer: C) Metallic bond. Metallic bonds form when metal atoms donate their valence electrons to a
common pool that surrounds them, creating a strong attraction between the positive metal ions and the
negative electron sea.
9. What is the term for the attraction between a partially positive hydrogen atom and a partially negative
atom of another molecule?
A) Ionic bond
B) Covalent bond
C) Metallic bond
D) Hydrogen bond
Answer: D) Hydrogen bond. Hydrogen bonds form when a hydrogen atom that is covalently bonded to a
highly electronegative atom (such as oxygen, nitrogen, or fluorine) is attracted to a partially negative
atom of another molecule.
10. What is the term for a process in which atoms are rearranged to form new substances?
A) Chemical reaction
B) Chemical equation
C) Chemical formula
D) Chemical balance
Answer: A) Chemical reaction. A chemical reaction is a change in which one or more substances are
converted into new substances with different properties.
11. What is the term for a symbolic representation of a chemical reaction using chemical formulas and
symbols?
A) Chemical reaction
B) Chemical equation
C) Chemical formula
D) Chemical balance
Answer: B) Chemical equation. A chemical equation shows the reactants and products of a chemical
reaction, as well as their physical states and coefficients.
12. What is the term for a combination of symbols and subscripts that represents the composition of a
compound?
A) Chemical reaction
B) Chemical equation
C) Chemical formula
D) Chemical balance
Answer: C)
, B:
1. Which of the following statements about atomic structure is correct?
a) The nucleus of an atom contains electrons.
b) Protons have a positive charge and are located in the electron cloud.
c) Electrons have a negative charge and are located in the nucleus.
d) Neutrons have a negative charge and are located in the electron cloud.
Answer: b) Protons have a positive charge and are located in the electron cloud.
Rationale: Protons have a positive charge and are located in the nucleus, while electrons have a negative
charge and are located in the electron cloud surrounding the nucleus.
2. An atom of an element has a mass number of 17 and an atomic number of 7. How many neutrons
does this atom have?
a) 17
b) 7
c) 10
d) 24
Answer: c) 10
Rationale: Neutrons can be calculated by subtracting the atomic number from the mass number. In this
case, 17 - 7 = 10 neutrons.
3. Which of the following is a characteristic of isotopes?
a) They have the same number of electrons.
b) They have the same number of protons.
c) They always have the same atomic mass.
d) They may have different numbers of neutrons.
Answer: d) They may have different numbers of neutrons.
Rationale: Isotopes are atoms of the same element that have different numbers of neutrons, resulting in
different atomic mass.
4. Which of the following is a true statement about ions?
a) Ions are formed when atoms gain or lose protons.
b) Anions have a positive charge.
c) Cations have a negative charge.
d) Ions always have a neutral charge.
Answer: a) Ions are formed when atoms gain or lose protons.
Rationale: Ions are formed when atoms gain or lose electrons, leading to a change in the overall charge
of the atom.
5. Which of the following is a characteristic of the periodic table?
a) Elements are arranged in alphabetical order.
b) Elements are arranged by increasing atomic number.
c) Elements are grouped according to electron configuration.
d) Elements are placed randomly without any specific order.
Answer: b) Elements are arranged by increasing atomic number.
Rationale: The periodic table arranges elements in order of increasing atomic number, which reflects the
number of protons in the nucleus of an atom.
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