When a strip of magnesium metal is touched to a flame, a bright light and a whitish substance are produced. why is ghe burning of magnesium considered a chemical change

When the water vapor cools it condenses select a number that represents his process on the

What is a metal replacement reaction

A650 ml sodium bromine solution has a bromide ion concentration of 0.245 m. what is the mass (g) of sodium bromide in solution? a) 103.b)0.00155.c)16400.d) 16.4.e) 0.159