When a substance is added to water, bubbles form. How can you confirm the type of change that took place?

If the density of water is 1.0 g/cm3, which of these materials would float in water, based on their densities? check all that apply. aluminum cork iron lead wax

One does not belong why? ice, gold ,wood ,diamond and table salt

Identify the missing numbers below to show the result of multiplying the numbers (1.6 × 10-19)(5.0 × 106) = c × 10d