Why is a match being struck a physical change

Suppose an ice cube weighing 36.0 g at a temperature of 10°C is placed in 360 g water at a temperature of 20°C. Calculate the temperature after thermal equilibrium is reached, assuming no heat loss to the surroundings.

What is the reducing agent in the following reaction: 2Mg + O2 → 2MgO? O Mg Mg and O Neither element

If 60.2 grams of hg combines completely with 24.0 grams of br to form a compound what is the percent

Definition of brittleness

What the name for the compound CaF2

Potassium chlorate decomposes according to the following chemical equation: 2KCIO3 - - 2KCI + 3O2 If you start with 458g of KCIO3, what mass (g) of O2 will be produced? 83.71 L O2 179.39 L O2 687 L O2 67.2 L O2

Sun plants can grow from both a blank and blank

In ionic bonds, valence electrons are

When an aqueous solution of silver nitrate is mixed with an aqueous solution of potassium chloride which are the spectator ions?

Investigating changes in colligative properties involves the measurement of a solution's concentration in molality instead of molarity because