Mixing food coloring with water is an example of a chemical change true or false

Why is active packaging beginning to be used?

5. Given that a 40.14 g sample of hydrated NiSO4•XH2O is reduced in mass to 2.14 g upon heating. Determine the value of X.

Which of the following molecules/ions has a pyramid shape?

If the H + in a solution is 1x10^-1 mol/L what is the OH-

Many metals undergo a single displacement reaction with hydrogen chloride (a strong acid, HCl). One example is magnesium, Mg. The products are hydrogen gas, H2, and magnesium chloride, MgCl2.

All of the following are diatomic molecules except? a) H b) Br c) CI d) S

How is radiation related to electromagnetic waves and thermal energy?

For the reaction a+2b→c under a given set of conditions, the initial rate is 0.180 m/s. part a what is δ[b]/δt under the same conditions?

What is the number of oxygen atoms in the ring portion of the haworth structure of glucose?

Explain what it means by a balanced chemical equation