1. Solids have a definite volume and a definite shape Group of answer choices

True

False

2. A mixture IS a pure substance
Group of answer choices

True

False

1. True

2. False

Explanation:

Solids do have a definite volume and a definite shape

Mixture is an impure substance

1. True, solids have both definite volume and shape

2. False, a mixture is not a pure substance

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides