An ion of zinc, Zn, has 28 electrons, 30 protons and 33 neutrons. What is its mass number

Seismic waves are recorded by a what

Glaicers can only form when

What do you call an atom that has different numbers of protons and neutrons?

Which of the following molecules is NOT a polymer? a. starch c. glucose b. protein d. cellulose

We would expect warmer Northern Atlantic currents to have all BUT ONE of these consequences on Earth. A) higher sea level B) increased ice melt C) decreased precipitation D) disruption of the Gulf stream

What are some reasons why the research should be put through a peer-review process?

Match the formula for the following compound: HgO2 Mercury (IV) oxide Mercury (II) oxide Mercury dioxide Mercury oxide

In a river, long boulders are transporting by

Molar heat of condensation/vaporization of energy definition chemistry

What do different rock textures of metamorphic rock reflect