Compare and contrast the reaction between 1) halogens and alkanes and between 2) halogens and alkenes. 1) Occurs ; requires ; by 2) Occurs ; requires ; by

What happens when the temperature of a solution increases?

What is a substance? a. a physical property of matter b. a chemical property of matter c. an element or compound that cannot be physically separated d. characteristics used to tell the difference between mixtures

Animals that reproduce sexually either do it through external or internal fertilization. read the following statement and decide if it is true or false. birds reproduce through external reproduction which is because the female will then be able to protect the egg.