What are the five branches of Earth Science?

Which is an example of an element? a. salt (nacl) b. water (h20) c. silver (ag) d. electron (e-) hint?

Based on the excerpt, which statement provides the best example of incentive for a sumo wrestler to cheat? Sumo wrestling is revered in a way that American sports can never be.

How do you know if a substance can undergo a chemical change?

Atoms can gain lose or share electrons durning a chemical change why doesn't this cause the atoms identities to change?

Sprite: When mixed with red cabbage water, resulting solution turned red. Watermelon juice: When mixed with red cabbage water, resulting solution turned pink/purple. Egg whites: When mixed with red cabbage water, resulting solution turned green.

Potassium chloride, kcl, sodium sulfate, na2so4, glucose, c6h12o6, carbon dioxide, co2 and ammonium phosphate, (nh4) 3po4, are soluble in water.

Use the periodic table to select the element from the drop-down menu that has the correct relative electronegativity.

List the symbols for all the elements with electron configurations that end as follows. Each n represents an energy level.

Why is it necessary for the measuring devices to be clean

Copper consists of two naturally occuring isotopes. their masses are 62.930 amu and 64.928 amu. calculate their abundances.