P Sci Review 5

P Sci Review 5

Multiple Choice

Which is the lowest point of a transverse wave?

• amplitude

• crest

• period

• trough

Multiple Choice

Which statement best explains why there could be a force of attraction between two electrically charged objects?

• Because they have like charges

• Because they have unlike charges

• Because they have the same number of protons

• Because they have the same number of neutrons.

Multiple Choice

Which accounts for most of the mass of an atom?

• electrons

• protons

• neutrons and protons

• electrons and neutrons

Multiple Choice

Which element has the same number of valence electrons as krypton (Kr)?

• neon (Ne)

• fluorine (F)

• chlorine (Cl)

• selenium (Se)

Multiple Choice

Which statement best describes the atoms of elements that form compounds by covalent bonding?

• They share electrons between them.

• They have a large difference in atomic mass.

• They are in the same period in the periodic table

• They have a large difference in valence electron number