Different isotopes of the same element must have a different

A. mass number

B. atomic number

C. number of protons

D. number of electrons

Why do you need to think about polarity of the different ingredients in your salad dressing in order for it to turn out well?

Anthony made a pitfall trap by burying a small glass in the ground so that the top of the glass was exactly level with the ground around it. What kind of creatures will Anthony's trap most likely catch? A. earthworms and grubs B.

How has earth changed during our masses era?

Which of the following substances is an element? A. carbon (C) B. water (H2O) C. methane (CH4) D. brass (Cu + Zn)

In Dna, guanine always forms hydrogen bonds with?

What two chemical mechanisms change pyruvate to acetyl-CoA in the pyruvate dehydrogenase complex? Group of answer choices a) Decarboxylation and condensation. b) Oxidation and decarboxylation. c) Condensation and dehydrogenation.

Which earth cycle does the suns energy drive

How many moles are in 10 grams of CaCl2?

Which is the correct formula for phosphorus pentachloride? PCl4 because a subscript of 4 indicates four Cl atoms PCl5 because a subscript of 5 indicates five Cl atoms P5Cl because a subscript of 5 indicates five P atoms P5Cl3 because a subscript of

Why are the elements in groups 3 to 12 often used to make dyes?