H2GM - Every Question Matters. Logo

Questions in chemistry

[Open]Who discovered heavy hydrogen?

[Open]How are elements and compounds related?

[Open]When an atom becomes an ion, does its mass number change?

[Open]Why do bananas and Sprite cause a chemical reaction?

[Open]Fill in the blank: An element's __________ is its row in the periodic table.

[Open]Will you write the names for the compounds [tex] \text{FeO} [/tex] and [tex] \text{Fe}_2\text{O}_3 [/tex]?

[Open]Why is flammability considered a chemical property rather than a physical property?

[Open]The solid has a mass of 180 g. What is the density of the solid?

[Open]Will a precipitate form from [tex] \text{Pb(NO}_3\text{)}_2 \text{(aq)} [/tex] and [tex] \text{HCl(aq)} [/tex]?

[Open]What is the name for \((\text{NH}_4)_2\text{SO}_3 \cdot \text{H}_2\text{O}\)?