ATI Teas 7 Science Study Guide
Comprehensive Questions
(Frequently Tested) and Complete
Solutions Graded A+
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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
Comprehensive Questions
(Frequently Tested) and Complete
Solutions Graded A+
Professional Academic Assistance Services
Services Offered
• Proctored Exam Assistance
• Online Class Management (Full Course Support)
• Exam Preparation & Study Materials
• Assignments and Coursework Support
• Essay and Research Paper Writing
• Discussion Posts & Responses
• Editing and Proofreading
• Confidential Academic Consultation
Contact Information
Email:
WhatsApp link: https://wa.me/254704846336
Fast Response | Confidential | Reliable Academic Support
Helping Students Achieve Academic Excellence
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
