no
It does not decrease in mass, only weight, the mass is still all there, but as when it has been heated smoke is given off from the element, and goes into the atmosphere. It may not sound like the mass is all there with the heated element, but if the smoke were conserved during the experiment the weight would be the same as before the experiment.
When copper oxide is heated, it undergoes a chemical reaction that causes it to lose oxygen atoms, resulting in the formation of copper metal. The mass of the copper metal formed is equal to the mass of the original copper oxide. Therefore, the overall mass remains the same.
An egg will lose mass in salt water because of osmosis. Water flows out of the egg into the salt water solution, which has a higher concentration of solutes. This results in the egg losing water and mass.
Crystallised BaCl2·2H2O will be de-hydrated when heated, loozing 2H2O per mol BaCl2·2H2O
if anything it would be reasonable to expect it to lose mass.
use a thermetor
As a hydrated compound is heated, the water molecules contained within it will evaporate, leading to a decrease in mass. This process is known as dehydration.
The blue powder likely underwent a chemical reaction when heated, causing it to change color and lose mass. The change in color is indicative of a chemical transformation, while the loss in mass could be due to the release of volatile components or decomposition of the powder into lighter molecules or gases.
Plants may lose mass when they don't have water due to dehydration and shrinking of cells. Water is essential for maintaining turgor pressure, which keeps plant cells rigid and upright. Without water, plants may wilt and appear to lose mass.
The mass of a seed leaf changes depending on the water and internal processes. When some seed leaves lose water due to transportation, they lose mass. Other will start to sprout and produce their own food, which cause them to gain mass.
Weight loss can include anything that make you weigh less on the scales including losing weight in water, lean muscle mass and fat. What you really want to lose is fat, while gaining lean muscle mass to keep your metabolism going. If you drink enough water, your body will stop hoarding water for future use and you will lose some water weight. So losing water weight and fat is a good thing (obviously as long as you don't dehydrate), but you really do not want to lose muscle mass.
because the leaves take out more water