ATI TEAS 2026 Science Practice Questions | Most Tested
Questions & 100% Correct Answers | Latest Update
1. The normal pH range of the blood in a healthy person is:
7.35 to 7.45
7.05 to 7.25
7.45 to 7.65
6.75 to 7.85
2. Which part of the neuron sends signals?
Dendrites
Axon
Dopamine
Soma
Synapse
3. Which equation represents a decomposition chemical reaction?
2K + 2H2O → 2KOH + H2
2S + 3O2 → 2SO3
Zn + 2HCl → ZnCl2 + H2
2NaCl → 2Na + Cl2
4. Describe the primary function of red blood cells in the human body.
Red blood cells fight infections in the body.
Red blood cells produce hormones.
, Red blood cells transport oxygen from the lungs to the body's
tissues.
Red blood cells help in blood clotting.
5. Describe the difference between endothermic and exothermic reactions in
terms of energy.
Both types of reactions absorb energy.
Endothermic reactions release energy, while exothermic reactions
absorb energy.
Endothermic reactions absorb energy, while exothermic reactions
release energy.
Both types of reactions release energy.
6. Describe the significance of the arrangement of elements in the periodic
table's columns.
The columns show the number of neutrons in each element.
The columns represent groups of elements that share similar
chemical properties and reactivity.
The columns categorize elements based on their physical states.
The columns indicate the atomic weights of the elements.
7. What is the name of the structures in the lungs that facilitate the exchange of
gases?
Capillaries
Trachea
Bronchi
Alveoli
, 8. What type of chemical reaction occurs when sodium sulfide reacts with
hydrochloric acid to produce sodium chloride and hydrogen sulfide?
Combustion reaction
Decomposition reaction
Double displacement reaction
Synthesis reaction
9. Describe the nature of the bond that holds the atoms together in a water
molecule.
The bond in a water molecule is a hydrogen bond, which occurs
between water molecules.
The bond in a water molecule is a covalent bond, where electrons
are shared between hydrogen and oxygen.
The bond in a water molecule is a metallic bond, which involves a sea
of electrons.
The bond in a water molecule is an ionic bond, where electrons are
transferred from one atom to another.
10. Elements in the periodic table of the elements are organized into columns
and rows. The columns are organized to show the
Similarities of the reactivity in groups.
Sum of atomic weights per column.
Number of neutrons in a column.
Amount of radioactivity in each group.
Questions & 100% Correct Answers | Latest Update
1. The normal pH range of the blood in a healthy person is:
7.35 to 7.45
7.05 to 7.25
7.45 to 7.65
6.75 to 7.85
2. Which part of the neuron sends signals?
Dendrites
Axon
Dopamine
Soma
Synapse
3. Which equation represents a decomposition chemical reaction?
2K + 2H2O → 2KOH + H2
2S + 3O2 → 2SO3
Zn + 2HCl → ZnCl2 + H2
2NaCl → 2Na + Cl2
4. Describe the primary function of red blood cells in the human body.
Red blood cells fight infections in the body.
Red blood cells produce hormones.
, Red blood cells transport oxygen from the lungs to the body's
tissues.
Red blood cells help in blood clotting.
5. Describe the difference between endothermic and exothermic reactions in
terms of energy.
Both types of reactions absorb energy.
Endothermic reactions release energy, while exothermic reactions
absorb energy.
Endothermic reactions absorb energy, while exothermic reactions
release energy.
Both types of reactions release energy.
6. Describe the significance of the arrangement of elements in the periodic
table's columns.
The columns show the number of neutrons in each element.
The columns represent groups of elements that share similar
chemical properties and reactivity.
The columns categorize elements based on their physical states.
The columns indicate the atomic weights of the elements.
7. What is the name of the structures in the lungs that facilitate the exchange of
gases?
Capillaries
Trachea
Bronchi
Alveoli
, 8. What type of chemical reaction occurs when sodium sulfide reacts with
hydrochloric acid to produce sodium chloride and hydrogen sulfide?
Combustion reaction
Decomposition reaction
Double displacement reaction
Synthesis reaction
9. Describe the nature of the bond that holds the atoms together in a water
molecule.
The bond in a water molecule is a hydrogen bond, which occurs
between water molecules.
The bond in a water molecule is a covalent bond, where electrons
are shared between hydrogen and oxygen.
The bond in a water molecule is a metallic bond, which involves a sea
of electrons.
The bond in a water molecule is an ionic bond, where electrons are
transferred from one atom to another.
10. Elements in the periodic table of the elements are organized into columns
and rows. The columns are organized to show the
Similarities of the reactivity in groups.
Sum of atomic weights per column.
Number of neutrons in a column.
Amount of radioactivity in each group.
