ATI Teas 7 Science Study Guide with verified solutions
(Nurse Cheung)
, ATI Teas 7 Science Study Guide
1 .changes between states of matter: 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
1. empirical evidence: information that is gathered through observation and experimentation
2. qualitative evidence: described in terms of quality or characteristics
3. quantitative evidence: described in terms of quantity or amount
4. reliable evidence: information that can be trusted and is consistent
5. valid evidence: information that accurately represents what it is supposed to represent
6. placebo: harmless substance that has no therapeutic ettect
7. independent variable: variable that is being tested and is not attected by other variables
8. controlled variable: variable that is not being tested and is held constant
9. scientific method: 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.
10. proton: particle with a single positive charge
11. neutron: neutron is a particle with no electric charge
12. electron: particle with a single negative charge
13. isotopes: atoms of the same element that have a ditterent number of neutrons
14. atomic mass: atom is the total number of protons and neutrons; Carbon-12 (number of 6 protons + the number of 6
neutrons)
15. atomic number: number of protons in an atom
16. atoms charge: more electrons than protons = negative charge more
protons than electrons = positive charge
, 17. ionic bonds: atoms trade electrons in order to achieve stability
18. covalent bonds: atoms share electrons in order to achieve stability
19. electronegativity:
20. matter: anything that has mass and occupies space
21. physical properties: ditterent properties of a substance that can change their state without changing the identity of
the substance
22.states of physical properties: 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)
23.
phases of a substance: 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
24. states of matter: 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
25. valence electrons: outermost energy level of an atom
26. reactants: substances involved in the reaction
27. products: new substances formed by the reaction
28. combustion reaction: type of reaction that happens when a substance reacts with oxygen (O) to form carbon
dioxide (CO) and water (H)
(Nurse Cheung)
, ATI Teas 7 Science Study Guide
1 .changes between states of matter: 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
1. empirical evidence: information that is gathered through observation and experimentation
2. qualitative evidence: described in terms of quality or characteristics
3. quantitative evidence: described in terms of quantity or amount
4. reliable evidence: information that can be trusted and is consistent
5. valid evidence: information that accurately represents what it is supposed to represent
6. placebo: harmless substance that has no therapeutic ettect
7. independent variable: variable that is being tested and is not attected by other variables
8. controlled variable: variable that is not being tested and is held constant
9. scientific method: 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.
10. proton: particle with a single positive charge
11. neutron: neutron is a particle with no electric charge
12. electron: particle with a single negative charge
13. isotopes: atoms of the same element that have a ditterent number of neutrons
14. atomic mass: atom is the total number of protons and neutrons; Carbon-12 (number of 6 protons + the number of 6
neutrons)
15. atomic number: number of protons in an atom
16. atoms charge: more electrons than protons = negative charge more
protons than electrons = positive charge
, 17. ionic bonds: atoms trade electrons in order to achieve stability
18. covalent bonds: atoms share electrons in order to achieve stability
19. electronegativity:
20. matter: anything that has mass and occupies space
21. physical properties: ditterent properties of a substance that can change their state without changing the identity of
the substance
22.states of physical properties: 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)
23.
phases of a substance: 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
24. states of matter: 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
25. valence electrons: outermost energy level of an atom
26. reactants: substances involved in the reaction
27. products: new substances formed by the reaction
28. combustion reaction: type of reaction that happens when a substance reacts with oxygen (O) to form carbon
dioxide (CO) and water (H)
