Answer:
disagree
Explanation:
Cellulose (main component of wood beside lignin) is composed from carbon, hydrogen and oxygen with the following molecular formula (C₆H₁₀O₅)ₓ (where x is the degree of condensation of beta-glucose units which are the basic monosaccharide of the cellulose polysaccharide).
Now when you burn cellulose you obtain carbon (ashes), carbon dioxide (CO₂) and water (H₂O). Of course, beside the main products we may have other by-products but we consider them in very low quantity.
The difference between 3 kg of starting wood and 500 g of ashes is representing the quantity of carbon dioxide (CO₂) and water (H₂O) formed.
We have to say that CO₂ and H₂O are in gaseous state and escape in the atmosphere.
The law of conservation of mass is always valid.
Answer:
B
Explanation:
The properties of a substance can be measured when matter undergoes a change.
Answer:
a) Cell theory
Explanation:
Cell theory states that cells are the basic unit of life
The degree of compactness of a substance