Chemistry Final

Front

What property of alkali metals explains their relatively low melting points?

Back

Metallic bonds are weakest for metals with few electrons.

Front

What happens to the nucleus during radioactive decay?

Back

The nucleus disintegrates into a lighter and less stable nucleus.

Front

What conclusion can be drawn about the solubility of metal sulfates compared to metal chlorides?

Back

Metal sulfates are generally more soluble in water than metal chlorides.

Front

What does Dalton's Law state about the pressure of a mixture of non-reactive gases?

Back

The total pressure exerted by the mixture is equal to the sum of the partial pressures of individual gases.

Front

What type of reaction is characterized by the release of energy?

Back

Exothermic reaction.

Front

Define metallic bond.

Back

A bond formed by the attraction between positively charged metal ions and the electrons in a metal.

Front

What is the significance of electronegativity in chemical bonding?

Back

Electronegativity determines how strongly an atom attracts electrons in a bond.

Front

What is an endothermic reaction?

Back

A reaction that absorbs energy from its surroundings.

Front

What is the difference between ionic and covalent bonds?

Back

Ionic bonds involve the transfer of electrons, while covalent bonds involve the sharing of electrons.

Front

What is the role of a catalyst in a chemical reaction?

Back

A catalyst speeds up a reaction without being consumed in the process.