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Physics Classroom is making strides to make our site accessible to everyone. Our site contains 6 navigation areas. The Primary, Secondary, and Page Level navigations have a screen reader version of their nav structure that allows using the left and right keys to navigate sibling navigation items, and up or down keys to navigate parent or child navigation items. The others can be navigated using tabs. The Primary Navigation handles the first 2 levels of site pages. The Secondary (which is not always available) handles the 3rd and 4th level of structure. The Page level navigation allows you to navigate the current page's headings quickly. The Header Navigation contains the Light/Dark Mode toggle, Search, Notifications and account login. The Breadcrumb Navigation contains the breadcrumb of the current page. If the current page has a breadcrumb, you can get to it by skipping to the content and tabbing in reverse (shift plus tab). The Footer Navigation contains links such as Privacy, Contact, about and terms. Some resources contain an Audio Player that can be activated by holding down the T key for 3 seconds, and then using K to pause and resume. While not every area of Physics Classroom is usable purely from keyboard and screen reader, we are committed to continue work on making this possible. If you have questions or need additional help, please use this link to contact us.

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Names to Formulas 1 - Directions

Using the Names to Formulas 1 Concept Builder is quite simple. There are three difficulty levels. Every question in each difficulty level is the same. You are presented with the names of three ionic compounds. You will have to inspect the formula for each name and see if it follows the rules for formula writing. If it does not follow the rules, then click on the formula (or name). The name and formula will be highlighted - surrounded by bars. You can select as many incorrect names and formulas that you wish. If you change your mind, then simply tap on the formula again to deselect it. Just make sure you select all that you believe are not following the rules for properly written formulas. Once you are satisfied with your choice(s) of an answer, tap on the Check Answer button. Your answer(s) will be evaluated and your Progress Report will be updated.

Your goal is to earn "Stars" and to complete one or more difficulty levels. Stars are earned when you show success on a particular question. If you miss a question then you will have to answer two similar questions correctly before earning a star. Once you show success on all the questions for a particular difficulty level, you will earn the trophy for that difficulty level.

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