ATI TEAS – CHEMISTRY PROTOCORED
REAL EXAM 2025 | PRACTICE WITH 130
QUESTIONS AND VERIFIED ANSWERS |
GRADED A+ | PROFESSOR VERIFIED
DEFINE: Chemistry
-ANS-The study of composition of substances and how they change.
DEFINE: Matter
-ANS- Anything that has mass and takes up space
How many protons are in an atom with the atomic number of 8?
-ANS- 8
How is atomic mass calculated?
-ANS- The number of protons + the number of neutrons
,DEFINE: Isotope
-ANS- Atoms that have the same atom number but have a different number of
neutrons.
Mercury (Hg) has an atomic number of 80. Two naturally occurring isotopes of
mercury are Hg-196 and Hg-200.
How many neutrons do each of these isotopes have?
-ANS-Hg-196 has 116 neutrons.
Hg-200 has 120 neutrons.
Using the periodic table, how can you determine the number of electrons in an
atom?
-ANS-Since atoms are electrically neutral, the atomic number indicates the number
of protons and electrons.
How many electrons can each orbital hold?
-ANS- A single orbital can hold a maximum of 2 electrons.
Which letters indicate the orbital sub shell shapes?
S subshell
P subshell
D subshell
F subshell
, How many orbitals does an s subshell have and what is the maximum electron
capacity?
-ANS- 1 orbital: 2 electrons
How many orbitals does a p subshell have and what is the maximum electron
capacity?
-ANS-3 orbitals: 6 electrons
How many orbitals does a d subshell have and what is the maximum electron
capacity?
-ANS- 5 orbitals: 10 electrons
How many orbitals does an f subshell have and what is the maximum electron
capacity?
-ANS- 7 orbitals: 14 electrons
In what order to electrons fill orbitals?
-ANS- Lowest energy to highest energy.
DEFINE: Element
-ANS- A substance that cannot be decomposed into simpler by ordinary chemical
processes all matter is composed of elements.
REAL EXAM 2025 | PRACTICE WITH 130
QUESTIONS AND VERIFIED ANSWERS |
GRADED A+ | PROFESSOR VERIFIED
DEFINE: Chemistry
-ANS-The study of composition of substances and how they change.
DEFINE: Matter
-ANS- Anything that has mass and takes up space
How many protons are in an atom with the atomic number of 8?
-ANS- 8
How is atomic mass calculated?
-ANS- The number of protons + the number of neutrons
,DEFINE: Isotope
-ANS- Atoms that have the same atom number but have a different number of
neutrons.
Mercury (Hg) has an atomic number of 80. Two naturally occurring isotopes of
mercury are Hg-196 and Hg-200.
How many neutrons do each of these isotopes have?
-ANS-Hg-196 has 116 neutrons.
Hg-200 has 120 neutrons.
Using the periodic table, how can you determine the number of electrons in an
atom?
-ANS-Since atoms are electrically neutral, the atomic number indicates the number
of protons and electrons.
How many electrons can each orbital hold?
-ANS- A single orbital can hold a maximum of 2 electrons.
Which letters indicate the orbital sub shell shapes?
S subshell
P subshell
D subshell
F subshell
, How many orbitals does an s subshell have and what is the maximum electron
capacity?
-ANS- 1 orbital: 2 electrons
How many orbitals does a p subshell have and what is the maximum electron
capacity?
-ANS-3 orbitals: 6 electrons
How many orbitals does a d subshell have and what is the maximum electron
capacity?
-ANS- 5 orbitals: 10 electrons
How many orbitals does an f subshell have and what is the maximum electron
capacity?
-ANS- 7 orbitals: 14 electrons
In what order to electrons fill orbitals?
-ANS- Lowest energy to highest energy.
DEFINE: Element
-ANS- A substance that cannot be decomposed into simpler by ordinary chemical
processes all matter is composed of elements.
