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

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) Communication of results.
D) Observation.

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

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

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

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

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

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

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

A) The number of neutrons in the nucleus.
B) The difference in electronegativity between atoms
C) The atomic mass of the elements.
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 shared; in covalent bonds, they are transferred.
C) In both, electrons are equally shared.
D) In ionic bonds, electrons are unequally attracted; in covalent bonds, equally attracted.

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

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

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

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

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

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

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

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

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