ATI TEAS 7 STUDY GUIDE 2025–2026 –
EXAM TEST 2 QUESTIONS AND
DETAILED ANSWERS |
changes between states of matter - Answer~condensation = gas to liquid; molecules
of the gas slow down and become closer together
evaporation = liquid to gas; molecules of the liquid gain enough energy to break
away from the surface of the liquid
sublimation = solid to gas; molecules of the solid gain enough energy to break away
from the surface of the solid
deposition = gas to solid; molecules of the gas slow down and become closer together
melting = solid to liquid; molecules of the solid gain enough energy to break away
from each other.
freezing = liquid to solid; molecules of the liquid lose enough energy to stay together
empirical evidence - Answer~information that is gathered through observation and
experimentation
qualitative evidence - Answer~described in terms of quality or characteristics
quantitative evidence - Answer~described in terms of quantity or amount
reliable evidence - Answer~information that can be trusted and is consistent
valid evidence - Answer~information that accurately represents what it is supposed
to represent
placebo - Answer~harmless substance that has no therapeutic effect
,independent variable - Answer~variable that is being tested and is not affected by
other variables
controlled variable - Answer~variable that is not being tested and is held constant
scientific method - Answer~First, identify a problem or question.
Second, gather information about the problem or question.
Third, form a hypothesis, which is a possible answer to the problem or question.
Fourth, design and conduct an experiment to test the hypothesis.
Fifth, analyze the data from the experiment and draw conclusions.
Sixth, communicate the results of the experiment.
proton - Answer~particle with a single positive charge
neutron - Answer~neutron is a particle with no electric charge
electron - Answer~particle with a single negative charge
isotopes - Answer~atoms of the same element that have a different number of
neutrons
atomic mass - Answer~atom is the total number of protons and neutrons; Carbon-12
(number of 6 protons + the number of 6 neutrons)
atomic number - Answer~number of protons in an atom
atoms charge - Answer~more electrons than protons = negative charge
,more protons than electrons = positive charge
protons and electrons are equal = neutral
ions - Answer~atoms that have gained or lost protons, and as a result, have a charge
either positive or negative
cations - Answer~atoms that have lost one or more electrons; positively charged ions
anions - Answer~atoms that have gained one or more electrons; negatively charged
ions
periodic table - Answer~columns = groups
rows = periods
orbitals - Answer~s = 2
p=6
d = 10
f = 14
ionic bonds - Answer~atoms trade electrons in order to achieve stability
covalent bonds - Answer~atoms share electrons in order to achieve stability
electronegativity - Answer~
matter - Answer~anything that has mass and occupies space
, physical properties - Answer~different properties of a substance that can change
their state without changing the identity of the substance
states of physical properties - Answer~mass = amount of matter in an object; grams
(g)
volume = amount of space an object occupies; liters (L)
density = mass of an object divided by its volume; grams per liter (g/L)
phases of a substance - Answer~temperature = measure of the average kinetic energy
of the molecules in a substance; higher temperature = more energy and more space
they take up
pressure = measure of the force exerted on an object by the surrounding atmosphere;
higher pressure = molecules are forced together
states of matter - Answer~solid = definite shape and volume; molecules packed
together in a tight pattern
liquids = definite volume but take the shape of their container; molecules are not
packed together as tightly
gases = no definite shape or volume; molecules are far apart from each other
plasma = state of matter found in the stars; electrons have been stripped from the
atoms
valence electrons - Answer~outermost energy level of an atom
reactants - Answer~substances involved in the reaction
products - Answer~new substances formed by the reaction
combustion reaction - Answer~type of reaction that happens when a substance reacts
with oxygen (O) to form carbon dioxide (CO) and water (H)
EXAM TEST 2 QUESTIONS AND
DETAILED ANSWERS |
changes between states of matter - Answer~condensation = gas to liquid; molecules
of the gas slow down and become closer together
evaporation = liquid to gas; molecules of the liquid gain enough energy to break
away from the surface of the liquid
sublimation = solid to gas; molecules of the solid gain enough energy to break away
from the surface of the solid
deposition = gas to solid; molecules of the gas slow down and become closer together
melting = solid to liquid; molecules of the solid gain enough energy to break away
from each other.
freezing = liquid to solid; molecules of the liquid lose enough energy to stay together
empirical evidence - Answer~information that is gathered through observation and
experimentation
qualitative evidence - Answer~described in terms of quality or characteristics
quantitative evidence - Answer~described in terms of quantity or amount
reliable evidence - Answer~information that can be trusted and is consistent
valid evidence - Answer~information that accurately represents what it is supposed
to represent
placebo - Answer~harmless substance that has no therapeutic effect
,independent variable - Answer~variable that is being tested and is not affected by
other variables
controlled variable - Answer~variable that is not being tested and is held constant
scientific method - Answer~First, identify a problem or question.
Second, gather information about the problem or question.
Third, form a hypothesis, which is a possible answer to the problem or question.
Fourth, design and conduct an experiment to test the hypothesis.
Fifth, analyze the data from the experiment and draw conclusions.
Sixth, communicate the results of the experiment.
proton - Answer~particle with a single positive charge
neutron - Answer~neutron is a particle with no electric charge
electron - Answer~particle with a single negative charge
isotopes - Answer~atoms of the same element that have a different number of
neutrons
atomic mass - Answer~atom is the total number of protons and neutrons; Carbon-12
(number of 6 protons + the number of 6 neutrons)
atomic number - Answer~number of protons in an atom
atoms charge - Answer~more electrons than protons = negative charge
,more protons than electrons = positive charge
protons and electrons are equal = neutral
ions - Answer~atoms that have gained or lost protons, and as a result, have a charge
either positive or negative
cations - Answer~atoms that have lost one or more electrons; positively charged ions
anions - Answer~atoms that have gained one or more electrons; negatively charged
ions
periodic table - Answer~columns = groups
rows = periods
orbitals - Answer~s = 2
p=6
d = 10
f = 14
ionic bonds - Answer~atoms trade electrons in order to achieve stability
covalent bonds - Answer~atoms share electrons in order to achieve stability
electronegativity - Answer~
matter - Answer~anything that has mass and occupies space
, physical properties - Answer~different properties of a substance that can change
their state without changing the identity of the substance
states of physical properties - Answer~mass = amount of matter in an object; grams
(g)
volume = amount of space an object occupies; liters (L)
density = mass of an object divided by its volume; grams per liter (g/L)
phases of a substance - Answer~temperature = measure of the average kinetic energy
of the molecules in a substance; higher temperature = more energy and more space
they take up
pressure = measure of the force exerted on an object by the surrounding atmosphere;
higher pressure = molecules are forced together
states of matter - Answer~solid = definite shape and volume; molecules packed
together in a tight pattern
liquids = definite volume but take the shape of their container; molecules are not
packed together as tightly
gases = no definite shape or volume; molecules are far apart from each other
plasma = state of matter found in the stars; electrons have been stripped from the
atoms
valence electrons - Answer~outermost energy level of an atom
reactants - Answer~substances involved in the reaction
products - Answer~new substances formed by the reaction
combustion reaction - Answer~type of reaction that happens when a substance reacts
with oxygen (O) to form carbon dioxide (CO) and water (H)
