Is it easier to identify an unknown metal by such as physical properties as colour, lustre, mass, and volume, or by characteristic physical property such as density? explain your answer.

State the formula for density in words and mathematical symbols

The wave shown on the electromagnetic spectrum disturb the medium it passes through a)different frequency. b)the same frequency .

For each of the following types of reactions, write a general reaction formula in the symbolic form—for example, a + b → ab. single-displacement double-displacement synthesis decomposition