Which of the following occurs when a sodium atom forms a positively charged sodium ion (na+)?

the atom loses one proton

the atom loses one electron

the atom gains one electron

the atom gains one proton

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

b. the carbon cycle ensures living things have a source of hydrogen

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.