Call the activation number. When you receive your new credit card in the mail, it should have a sticker on the front that will explain how to activate it by either calling a phone number or going to a website. Locate the number and dial it using your phone. Ordinarily, the phone number will be a toll-free number, such as an 800 number. Depending upon your card issuer, you may only be able to call at certain times, such as during regular business hours. Some card issuers only allow activation by phone.
Solute and solvent. A solute is the substance that dissolves to make a solution. In salt solution, salt is the solute. A solvent is the substance that does the dissolving â it dissolves the solute. In salt solution, water is the solvent. During dissolving, particles of solvent collide with particles of solute. They surround the particles of solute, gradually moving them away until the particles are evenly spread through the solvent.
Essentially, a solvent works by pulling apart solute particles and forming complexes with them. The result is a mixture in which the solute particles are mixed together with the solvent particles, typically with little clusters of solvent molecules around each solute particle. Solvents can be solids, liquids, or gases. An example of a solid solvent is an alloy, where the metal acts as the solvent for whatever other particles are incorporated. A liquid solvent would be the water in salt water. A gaseous solvent would be the nitrogen in air, into which other gases, including oxygen, are mixed. OK.