Chemistry

What bond forms when atoms share electrons?

• metallic bond

• covalent bond

• hydrogen bond

• ionic bond

What is the heat released or absorbed in a chemical reaction at constant pressure?

• conduction

• enthalpy

• radiation

• convection

What type of bond involves a "sea of electrons"?

• covalent bond

• ionic bond

• metallic bond

• hydrogen bond

Which of these states that atoms tend to form bonds to have 8 electrons in their valence shell?

• Dalton's law

• Octet rule

• Thermodynamics

• 2-8-8 rule

What is the radioactive isotope used to date ancient artifacts?

• carbon-14

• carbon-18

• carbon-12

• carbon-20