PHY2

Matter can be defined as anything that

• contains molecules of a similar type.

• contains neutrons.

• has mass and occupies space.

When atoms bond together they form

• molecules

• protons

• orbits

The nucleus of an atom contains

• protons and electrons

• protons and neutrons

• electrons and neutrons

The atomic mass number is the number of

• protons plus neutrons

• protons plus electrons

• electrons and neutrons

The maximum number of electrons in the inner shell of an atom is

• 2

• 4

• 8

Oxygen has a valency of

• 2

• 6

• 8

The maximum number of electrons in the second shell of an atom is

• 2

• 4

• 8

The valence electrons of an atom are

• in the outermost shell

• in the innermost shell

• electrically neutral

The atomic number of an element is equal to the number of

• protons in each atom

• electrons in each molecule

• neutrons in each atom

The number of protons in an atom is equal to the number of

• electrons

• neutrons

• mass number