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Does adding coefficients to a chemical equation disobey the law of define proportions?
No
How do you speed up a chemical equation?
adding heat using a catalyser
What has to happen for a chemical equation to be balanced?
There has to be the same numbers and types of elements on both sides of the equation. This is accomplished by adding coefficients in front of the chemical formulas as needed. Never change a formula when balancing an equation.
When balancing a chemical equation what do you adjust?
You can only adjust the amount of a substance by adding a coefficient in front of the chemical formula. If there is no coefficient, it is understood to be 1.
When balancing a chemical equation can you adjust the script in a formula?
No. Never change the subscripts because then you are changing the formula of the substance to something else. You can only change the amount of a substance by adding a coefficient in front of the formula. If there is no coefficient, it is understood to be 1.
Is adding water to lemonade physical or chemical change?
Physical because, the lemonade dissolves into the water, without creating any of the chemical changing results.
What are the ways rates of chemical change can be changed?
Rate of chemical change can be altered by 1. Changing the temperature. 2. Changing the pressure (if gases are involved). 3. Changing the particle size of a solid reactant. 4. Changing the concentration of a dissolved reactant. 5. Adding a suitable catalyst.
Is adding of calcium to water a chemical change?
Yes, adding calcium to water is a chemical change. The following equation represents the reaction between calcium and water. Ca + 2H2O ---> Ca(OH)2 + H2
What is the word equation for adding copper(2) oxide to sulphuric acid?
The chemical reaction is:CuO + H2SO4 = CuSO4 + H2O
Is Ca plus CI2 - CaCI2 a balnced equation?
this can be trick balancing equations but this one is easy. the correct equation is CaCO3--> CaO+CO2. CaO plus CO2 does equal CaCO3 because you are adding the single Oxogen atom in CaO to the double Oxygen atom in CO2. basic maths makes it 1+2=3. Easy!!
What are the rules in transposition of terms in equation?
A term may be moved from one side of an equation to the other if the sign of the term in changed from plus to minus or vice versa after the move. Note that this follows from the more basic rule that an equation is not changed by adding the same term to each side. Transposing a term and changing its sign is equivalent to adding the positive/negative counterpart of the term to be transposed to each side of the equation.
Why do you subtract 6 from both sides?
In any equation, regardless of the number adding or subtracting, multiplying or dividing, you must do the same to both sides. This ensures you are not changing the equation. If only one side was done, then the original equation has been altered and is no longer the same as it began. Changing both sides with the same values keeps all things equal.
