Select all the items on the following list that are ions.

cu

po4-3

hco3-

al+3

hg2+2

na2co3

fe

zn

Which energy source produces carbon dioxide? a. plutonium b. uranium c. sunlight d. natural gas

What occurs at one of the electrodes in both an electrolytic cell and a voltaic ccl1? (I) Oxidation occurs as electrons arc gained at the cathode. (2) Oxidation occurs as electrons are lost at the anode.

What is the single temperature in degrees Celsius which has the same magnitude in degrees Fahrenheit?

The organ known as the cemetery of the red blood cells is called what

Why are the alkali metals and the halogens among the most reactive elements on the periodic table

If a substance cannot be seperated physically or chemically, it is?

Match each type of sedimentary rock with its composition. 1. mineral crystals clastic sedimentary rock 2. remains of dead creatures organic sedimentary rock 3. weathered rock particles chemical sedimentary rock

A scientist observes the boundary between two tectonic plates for a decade and finds that no new volcanoes have formed over the course of her investigation. Does this result support the theory of plate tectonics? Why or why not?

Why is it incorrect to balance a chemical equation by changing the subscripts?

A solution of CuSO4 is labelled 0.01 M. How much CuSO4 in grams, must be used to make 1 liter of solution? A) 1.120 g B) 1.595 g C) 1.6 g D) 15.0 g