Isotopes have _ a. the same number of neutrons but a different number of protons

Question

Isotopes have _ a. the same number of neutrons but a different number of protons. b. the same number of protons but different numbers of electrons. c. the same atomic mass. d. the same total number of protons and neutrons. e. the same number of protons but a different number of neutrons. If you had equal masses of each of the following substances, which would occupy the greatest volume? a. ice (d = 0.917 g/mL) b. water (d = 0.997 g/mL) c. beeswax (d = 0.960 g/mL) d. cocoa butter (d = 0.910 g/mL) e. aluminum (d - 2.70 g/mL) An element _ a. cannot be separated into simpler substances by chemical methods. b. exists only as atoms, not as molecules. c. always has the same chemical properties regardless of its source. d. can be separated into its components by physical methods. e. can also be a compound. A pure substance _ a. can have a composition that varies from sample to sample. b. has different chemical properties depending on its source. c. must be a compound. d. must be composed of atoms of the same type. e. cannot be separated into simpler substances by physical means.

Explanation / Answer

3.isotopes same number of protons but different number of neutrons. (e)

because isotopes are the atoms of same element havinhaving different mass number.

4.smaller the density higher will be the volume occupied for the same mass.

hence answer is cocoa butter option (d)

5. Element cannot be separated into simpler substance by chemical methods option-a

6. Compound cannot be separated into simpler substance by physical methods

option -e

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