Quizlet allows users to create and browse over 40 million previously created study sets and quizzes. Study sets contain flash cards, quizzes, audio training and games designed to help individuals study various topics. Quizlet is also available as an app on iPhone and Android mobile devices.
Quizlet cards are virtual flash cards created by the users of Quizlet.com. Teachers use Quizlet to provide online study resources for their students. Learners locate relevant study cards to assist in studying particular subjects. To access Quizlet, users must first register through Google, Facebook
The Quizlet app is a mobile version of Quizlet.com, so the app provides the study tools, flash cards, and games that are found on the website. All content on the site and app is user generated.
As of 2015, signing up for Quizlet flashcards is free, although users have the option to add superpowers to their accounts for a modest charge. Once logged in, users create study sets, record voices or study from existing sets. Creating a class group makes group study possible.
Quizlet practice tests on many different subjects are available at Quizlet.com. To take these tests, users must first sign up at the website using Facebook, Google or their email address. Quizlet is available on home or school computers as well as through iOS and Android mobile apps.
To create Quizlet flashcards, visit the site at Quizlet.com and click on the icon indicating Create a Set. Next select the language of reception, typically English or Spanish, and then the language to be translated. You can create up to 2,000 pairs of flashcards per set.
Covalent compounds include methane, carbon dioxide and water. A covalent bond is formed when electrons are shared between compounds, and electron pairs are created as a result.
Electrons are shared in a covalent bond when each of the participating atoms has roughly the same ability to attract electrons. The more evenly the two atoms are able to pull the participating electrons towards themselves, the more evenly the electrons share their time around each atom.
Ionic compounds form when electrons transfer from one atom to another. Covalent compounds form when atoms share electrons, resulting in no net loss or gain of electrons as seen in ionic compounds.
Polar covalent compounds are compounds in which the electrons are not shared equally between the atoms of the molecule. Differences in electronegativity between elements account for the unequal sharing of electrons in compounds.