Giving brainiest Which properties change the composition of a substance? Ex. H20 breaks down into 2 Hydrogen and 1 Oxygen atom.

chemical properties

physical properties

chemical and physical properties

neither chemical nor physical properties

Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings? a. the wings are analogous structures that evolved differently and do not have a similar internal structure. b. the wings are homologous structures that evolved differently and do not have a similar internal structure. c. wings of birds are vestigial structures, but the wing structures of bats are not vestigial. d. wings of bats are vestigial structures, but the wing structures of birds are not vestigial

How do i turn 2 s into one in the products

Using the periodic table, complete the following. element: hydrogen symbol: h₂ molecular weight: g mass of one mole: g/mol