True. Our Sun will eventually produce elements as heavy as iron.
false
false... oxygen is primarily transported by Red blood cells
false
true
False, a Hydrogen has 1 electron and Oxygen has 8 electrons
True
False. Hydrogen and oxygen - both gases - combine to form water - a liquid.
Most elements are metals.
true
False
Yes. Mendeleev did group elements in similar properties.
False elements are made up of atomsFalse.
False
False.
False
false
false.