Check Point 01
1 What is the name given for the substance that reacts and forms
in a chemical reaction?
2 State the law of conservation of mass.
3 Write the skeletal equation and balanced equation for the
following reaction
Potassium bromide (aq) + Banum iodide (aq)
- Potassium iodide (aq) + Banium chloride (s)
4 Balance the following chemical equations: CBSE 2014
) MG(OH), + HCI- MgCl, + HO
(0) N, + H 2 NH,
(P +0, PO,
5 Which of the following reactions is balanced, A or B?
Clocherty
A 2 NaCl + 2H,0 - 2NaOH + 2C1, + H2
8 Ca(OH), + Cl - Caoci, +HO
6 What do the symbols (aq) and (s) indicates in a balanced
chemical equation?
Answers
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1
Answer:
1. The substance which reacts in a chemical reaction is called as REACTANT and the substance form is called as PRODUCT.
2. The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.
6. The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.
Explanation:
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Answered by
2
Answer:
1. The substance which reacts in a chemical reaction is called as REACTANT and the substance form is called as PRODUCT.
2. The Law of Conservation of Mass dates from Antoine Lavoisier's 1789 discovery that mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction.
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