Which is an example of chemical change

A. mixing of posted colors

B. formation of clouds

C. sugar dissolving in water

D. separating salt from seawater

Which statement correctly evaluates the results of the report? It is likely to be reliable because the tests were done in a laboratory. It is likely to be reliable because the results support the conclusion presented.

Charges in an electric field will move electrons to: increase their kinetic energy decrease their kinetic energy increase their potential energy decrease their potential energy

If HCl is a 0.05 M solution and 50 mL is used to titrate the NaOH, what is the molarity of NaOH if the flask contains 100 mL?

Identify the following as a compound or a mixture: quartz (SiO2)

3 Ni2 + (aq) + 2 Cr (OH) 3 (s) + 10 OH - (aq) → 3 Ni (s) + 2 CrO42 - (aq) + 8 H2O (l) ΔG∘ = + 87 kJ/molGiven the standard reduction potential of the half-reaction Ni2 + (aq) + 2 e - → Ni (s) E∘red = - 0.

What controls the amount of light that enters the eye?

The universe contains billions of galaxies, each containing billions of stars. True or false

How is measuring the volume of liquids different than measuring the volume of regular-shaped solids?

Which of the following best describes the motion of the particles in a piece of steel?

Student follow up The ionic equation for the reaction between zinc and sulfuric acid is. Zn (s) + 2H (aq) - - Zn" (aq) + H2 (g) a State what has been oxidised in this reaction. Explain your answer in terms of electrons.