Which is true? A. Elements are always metals.
B. Elements are always solids.
C. Elements can be broken down into other substances.
D. Each element will react in its own way with other elements.​

If an area has high air pressure and low humidity, what type of weather will it most likely have? plz !

Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy

What is the common name for the compound shown here? enter the common name of the compound shown?