Question

please solve it correctly ​

Answer 1

♧︎︎︎ᴀɴsᴡᴇʀ♧︎︎︎

1. (a) combination reaction

2. (b) symbols and formula of reactants written first

3.(d) combination reaction

4. (d) CaCo3 → CaO +Co2

Fill in the blanks

1. chemical reaction

2. Reactants

3. carbon dioxide

Answer 2

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$\sf \small{A. \: Tick \: the \: Correct \: option}$

(1) Decomposition reaction is the reserve of

➩ a.)Combination Reaction

_________________________

(2) While writing a chemical equation

➩ b.) symbol of formula of reactant is written first

_________________________

(3) burning of carbon in oxygen is an example of

➩ d.) Combination reaction

_________________________

(4) Among the following reaction which of the following is a decomposition reaction

➩ d.)CaCO₃ ⟶ CaO + CO₂

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$\large\sf {B. \: Fill \: in \: the \: Blanks}$

(1) Process involving chemical change is called Chemical Reaction.

(2) Chemical substances reacting in the chemical reaction is called Reactants.

(3) the gas given out when vinegar reacts with sodium bicarbonate is Carbon dioxide (CO₂).

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