Would calcium and magnesium ions react? why or why not?
a. no they would not react because both calcium and magnesium form positive ions.
b. no, they would not react because calcium is a nonmetal and magnesium is a metal.
c. yes they would react because they both form +2 ions which cancel each other out.
d. yes they would react because calcium is a nonmetal and magnesium is a metal.

Sarah wants to know where in her garden chamomile would grow the best. she thinks chamomile will grow best in the corner of the garden that gets the most sunlight. to test her hypothesis, she decides to plant several groups of chamomile in her garden as an experiment. which of the following variables will sarah need to measure to know which group of plants grew best? a. the location of the plants b. the type of plants c. the height of the plants d. the amount of water she gives the plants

Given sno2 + 2h2 - sn + 2h20 tin oxide reacts with hydrogen to produce tin and water. how many moles of sno2 are needed to produce 500.0 grams of sn?

Which of these is a physical property