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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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