The law of conservation of matter states

In a balanced chemical equation, the mass of the reactants is equal to the

What coefficient is missing in C2H4 + (?) O2 = 2CO2 + 2H2O?

Which of the following represents the word equation magnesium + oxygen = magnesium oxide?

Which of these equations is not balances?

At higher temperatures, food cooks faster because particles of food

Catalysts that slow reactions are called

A slow reaction is likely to occur when the reactants have _________ temperatures and ________ surface areas.

Which is not true of enzymes

All of these are likely to speed up the rate of a reaction except

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