Atomic Structure I

Select the incorrect option:
A pure substance ________

• is only ever made up of one type of element

• can be made up of molecules

• can contain compounds

• is not a mixture

Electrons have

• no charge

• positive charge

• negative charge

• balanced charge

What kind of charge does a proton have?

• Negative
• Neutral
• Positive
• Fractional

What kind of charge does a neutron have?

• variable charge.

• Negative charge.

• No charge

• positive charge.

Where are electrons found in an atom?

• nucleus

• nebulus

• shells around the nucleus

• with protons

Sulfur has no total charge and 16 protons. How many electrons does it have

• 1

• 8

• 16

• -16

If a substance has no fixed shape and can't be squashed, it is a

• solid

• liquid

• gas

• plasma

Select two options.

Matter can be sorted broadly into two categories which are:

• solids

• pure substance

• mixtures

• molecules

The most basic building block of matter is the

• atom

• element

• molecule

• compound

Select two options.

Which two sub-atomic particles are found in the nucleus?

• electron

• protons

• neutrons

• neutrinos