balance the chemical equations
Answers
Answer:
When atoms gain or lose electrons to yield ions, or combine with other atoms to form molecules, their symbols are modified or combined to generate chemical formulas that appropriately represent these species. Extending this symbolism to represent both the identities and the relative quantities of substances undergoing a chemical (or physical) change involves writing and balancing a chemical equation. Consider as an example the reaction between one methane molecule (CH4) and two diatomic oxygen molecules (O2) to produce one carbon dioxide molecule (CO2) and two water molecules (H2O). The chemical equation representing this process is provided in the upper half of Figure 1, with space-filling molecular models shown in the lower half of the figure.
→ The substances undergoing reaction are called reactants, and their formulas are placed on the left side of the equation.
→ The substances generated by the reaction are called products, and their formulas are placed on the right sight of the equation.
→ Plus signs (+) separate individual reactant and product formulas, and an arrow.
→ separates the reactant and product (left and right) sides of the equation.
→ The relative numbers of reactant and product species are represented by coefficients (numbers placed immediately to the left of each formula). A coefficient of 1 is typically omitted.
Explanation:
Cao+H2O__Ca(OH)2
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