Is it a physical or chemical change when a candle is lit

What is the number of atoms in 3.54 mol s

In pea plants, the allele for tallness (t) is dominant to the allele for shortness (t). in the cross between a tall pea plant and a short pea plant shown below, what is the probability that the resulting offspring will be tall? whats the percent

Compare and contrast physical changes with chemical changes.