Answer:
it is calcium and bromine
Explanation:
this is because they are both ionic compounds
<span>The periodic table of elements is ordered by atomic weight from the top left to the bottom right. Each column is assigned a group, they can be either A groups or B groups. To determine the lightest element in the 1A group, locate the 1A column, at look at the top most element. In this case, H, hydrogen.</span>
Answer: option B.
carbon + oxygen → carbon dioxide
Explanation:
A Molecule should be it because it is a bond between atoms to make for instance diamonds.
Answer:
In a controlled experiment, an independent variable (the cause) is systematically manipulated and the dependent variable (the effect) is measured; any extraneous variables are controlled. State what steps you will take to design an experiment to test your hypothesis. Complete the experiment. Make observations. Record what happened during your experiment.