Question

to verify the law of chemical combination practical​

Answer 1

Answer:

Theory

• Matter can neither be created nor destroyed in a chemical change.
• Law of conservation of mass: In a chemical reaction (except for nuclear reactions as matter can change to energy) mass can neither be created nor destroyed.
• The reactants —> atoms of one or more substances simply get rearranged to form product.
• Total mass of reactants before reaction = Total mass of the product after reaction
• This law was proposed by Antoine Lavoisier.
• Chemicals undergo several kind of changes, i.e. Physical, Chemical and nuclear.
• Physical change: Matter only changes its phase from solid to liquid and from liquid to gas.
• Chemical change: The atoms of reactants rearrange and form new compounds.
• Nuclear change: The nucleus of an atom can be changed by adding/reducing the number of protons, in it/by splitting of nucleus.
• For example, Uranium can undergo fission to become Barium and Krypton.
• In chemical reaction, when the reactants react they may take/give heat, gas may be released, bubbles may be formed, color may change or precipitate may be formed.

MARK AS BRAINLIEST...