A) Draw a conclusion.
B) Do an experiment.
C) Make an observation
D) Form a hypothesis.

A) A collection of data.
B) An assumption without basis.
C) A provisional explanation that can be tested.
D) A proven conclusion.

A) Experimentation.
B) Conclusion.
C) Observation.
D) Communication of results.

A) One moves directly to the conclusion.
B) The hypothesis is modified or a new one is proposed.
C) The scientific method is discarded.
D) The data are considered invalid.

A) Conclusion.
B) Experimentation.
C) Communication of results.
D) Observation.

A) The prediction comes before the hypothesis.
B) The prediction is what we’d expect to see if the hypothesis is correct.
C) They are the same.
D) The hypothesis is the result of the experiment.

A) The atomic mass.
B) The atomic number.
C) The number of neutrons
D) The valence.

A) The same number of energy levels.
B) The same reactivity.
C) The same atomic mass.
D) The same number of valence electrons.

A) The same number of valence electrons.
B) The same number of energy levels.
C) Similar chemical properties.
D) The same number of protons.

A) Alkali metals.
B) Noble gases.
C) Halogens.
D) Transition metals.

A) The difference in electronegativity between atoms
B) The atomic mass of the elements.
C) The number of neutrons in the nucleus.
D) The number of protons in the atom.

A) In ionic bonds, electrons are transferred; in covalent bonds, they are shared.
B) In ionic bonds, electrons are unequally attracted; in covalent bonds, equally attracted.
C) In ionic bonds, electrons are shared; in covalent bonds, they are transferred.
D) In both, electrons are equally shared.

A) Polar covalent.
B) Ionic.
C) Nonpolar covalent.
D) Metallic.

A) Nonpolar covalent.
B) Ionic
C) Polar covalent.
D) Metallic.

A) Nonpolar covalent.
B) Polar covalent.
C) Ionic.
D) Metallic.

A) Ionic
B) None of the above.
C) Polar covalent.
D) Nonpolar covalent.

A) The amount of water in a substance.
B) The acidity or alkalinity of a solution.
C) The temperature of a liquid.
D) The mass of an atom.

A) 0
B) 10
C) 14
D) 7

A) None of the above
B) Basic
C) Neutral
D) Acidic

A) Alkaline
B) Neutral
C) Acidic
D) Radioactive

A) Soap
B) Lemon juice
C) Baking soda
D) Pure water