What is the term for atoms of the same element that differ in their mass numbers?

The mass of a neutron is a. about the same as that of a proton. c. double that of a proton. b. about the same as that of an electron. d. double that of an electron.

What caused the bonding of two atoms which undergo an ionic bond? A. mutual electrons interlock B. attraction between electron cloud and nuclei C. opposite ions attract each other D. sharing of outer shell

sample of copper (II) sulfate pentahydrate, CuSO4⋅5H20, is heated to remove the water of hydration from the crystals. The mass of the original sample before heating was 50.00 grams. If the mass of the cool, dry sample after heating is 34.

Radiometric isotope x decays to daughter isotope y with a half-life of 220,000 years. at present you have 1/4 gram of x in the rock.

Which sentence best describes the root of mama's unhappiness

Why does cotton fabric end up with better dye color than other fabrics?

Compare the advantages and disadvantages of using nuclear energy.

Prokaryotes that can cause diseases are in what domain

This metal is very reactive, has properties similar to magnesium, and is in the same period as bromine. What element is this?

Name two ways that living things use proteins