Chapter 4 Part 1

Multiple Choice

Atoms are the smallest units of matter.

Multiple Choice

Electrons are negatively charged particles.

Multiple Choice

Metals are poor conductors of electricity.

Multiple Choice

Ions are atoms that have gained or lost protons.

Multiple Choice

The periodic table arranges elements by increasing atomic number.

Match

Match the following key words

• Electronegativity

• Atoms

• Ion

• Molecule

• Compound

The power of an atom to attract elect

The basic unit of an element

A charged atom or molecule

Two or more atoms bonded together

A molecule composed of two/more element

• The power of an atom to attract elect

• The basic unit of an element

• A charged atom or molecule

• Two or more atoms bonded together

• A molecule composed of two/more element

Multiple Choice

The valence electrons of representative elements are . .

• in s orbitals only.

• located in the outermost occupied major energy level.

• located closest to the nucleus.

• located in the innermost occupied shell.

Multiple Choice

Which of the following pairs of elements and valence electrons is incorrect?

• Al - 3

• Br - 7

• S - 4

• Tl - 3

Multiple Choice

Among the following which property is commonly exhibited by a covalent molecule

• (A) High solubility in water

• High electrical conductance

• Low boiling point

• High melting point