Answer:
Fist column, apply the density of water.
Second column is material density, so it's mass of sample / volume of sample
Explanation:
Water density is 1 g/mL
Mass / Volume
If you have 0.25 g, 0.45g and 0.46 g of water, then you have the same values as volume, 0.25mL, 0.45mL and 0.46mL.
Again, density is the relation mass / volume so:
2.20 g / 0.25mL
3.73 g / 0.46 mL
3.52 g / 0.45mL
The states of matter change to produce the same or the new substance. When yeast is added to hydrogen peroxide bubble of carbon dioxide is formed which indicates chemical change.
<h3>What is a chemical change?</h3>
A chemical change is the formation of a new substance by the chemical alterations in the reactants. The yeast releases products of cellular respiration that react with hydrogen peroxide.
The reaction is exothermic as it releases heat and increases the temperature when measured by the thermometer. The Fizzing and bubbling occur when carbon dioxide reacts with H₂O₂ to produce a new substance.
Therefore, addition of yeast to hydrogen peroxide is a chemical change.
Learn more about chemical change here:
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