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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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