TRUE OR FALSE In a chemical reaction , molecules are not necessarily conserved while atoms are (true or false)

Which of the following pairs of elements belong to the same groupa. h and he b. li and bec. c and pb d. ga and ge

Achef makes salad dressing by mixing oil, vinegar, and spices, as shown. which type of matter is the salad dressing?

Select all that apply. a beta particle: is electromagnetic energy is an electron has zero charge is emitted from the nucleus has a +2 charge has a -1 charge