Key differences between Mass and Weight
The weight may vary, but the mass is constant.
The mass is measured in kilograms (kg), while the weight is measured in newtons (N).
Mass refers to the amount of matter an object has, but the weight refers to the force of gravity acting on an object.
440 cause mass cant be created or destroyed
No. Oxygen isn't even a metal.
Alkaline earth metals are the elements of the second column of the periodic table.
Answer:The compound created by calcium and chlorine is calcium chloride, and the formula for this compound is CaCl2 .
Explanation: