Chapter 1 Elements and compounds. The chemist's view of matter

Chemistry is the study of

Candle wax melts

Pure substances can only be elements or compounds

A substance that has a high boiling point but is a poor conductor of heat and electricity is a

How many neutrons does a chlorine-37 atom have?

Electrons

What was the first subatomic particle to be discovered?

How many electrons does a phosphide ion (P3-) have?

Co is the symbol for copper

Sulfur is in period

Lithium is found in nature as Li-6 and Li-7. Which isotope is more abundant?

The element most likely to have a low melting point is

Ozone has a boiling point of -111°C and a melting point of -193°C. At 100°C, it is a

Nitrogen-15 has

The atomic mass of phosporus is

The element most likely to be a poor conductor of electricity and to have a low melting point is

Matter is anything that

Metals

A solid forms when two clear liquids are poured together

Potassium is in group

Often the inner transition elements are referred to as the __________________ or ________________ elements

The symbol for silver is

The sum of the number of protons and neutrons in an atom is its

Isotopes are atoms of the same element with a different

A match burning is a chemical change