Q: After verifying your email address, Steam Guard will turn itself on automatically if you restart Steam twice. This is a security precaution. This is the way to enable Steam Guard if you've just verified your email address or if you have disabled Steam Guard in the past. In the "Account" tab of your Settings or Preferences menu, "Security Status" will display "Protected by Steam Guard" if Steam Guard has been enabled. Note: After enabling Steam Guard, you will need to wait 15 days before you can trade or use the Community Market. If the "Account" tab in your Settings or Preferences menu does not display an "Enable Steam Guard" button, you've likely recently had your account restored by Steam Support. Log completely out of Steam and then log back in to make the button appear.
A: Restart Steam twice to automatically turn Steam Guard on. Click the "Enable Steam Guard" button in the Settings or Preferences menu. Verify that Steam Guard is turned on. There is no "Enable Steam Guard" button.

Q: Bond energy is defined by the sum of all of the bonds broken minus the sum of all of the bonds formed: ΔH = ∑H(bonds broken) - ∑H(bonds formed). ΔH is the change in bond energy, also referred to as the bond enthalpy and ∑H is the sum of the bond energies for each side of the equation.  This equation is a form of Hess’s Law. The unit for bond energy is kilojoules per mol or kJ/mol. When given a reaction equation simply written with chemical symbols and numbers, it is helpful to draw this equation out, illustrating all of the bonds formed between the various elements and molecules. This visual representation will allow you to easily count all of the bonds that break and form on the reactant and product sides of the equation.  Remember, the left side of the equation is all of the reactants and the right side is all of the products. Single, double, and triple bonds have different bond energies, so be sure to draw your diagram with the correct bonds between elements.  For example, if you were to draw out the following equation for a reaction between 2 hydrogen and 2 bromine: H2(g) + Br2(g) ---> 2 HBr(g), you would get: H-H + Br-Br ---> 2 H-Br. The hyphens represent single bonds between the elements in the reactants and the products. In most cases, the bond energies you will be using for these calculations will be averages. The same bond can have a slightly different bond energy based on the molecule it is formed in; therefore, average bond energies are generally used..  A single, double, and triple bond are all treated as 1 break. They all have different bond energies, but count as only a single break. The same is true for the formation of a single, double, or triple bond. It will be counted as single formation. For our example, all of the bonds are single bonds. The left side contains the reactants. These will represent all of the broken bonds in the equation. This is an endothermic process that requires the absorption of energy to break the bonds. For our example, the left side has 1 H-H bond and 1 Br-Br bond. The right side contains all of the products. These are all of the bonds that will be formed. This is an exothermic process that releases energy, usually in the form of heat. For our example, the right side has 2 H-Br bonds.
A: Define the equation for calculating bond energy. Draw the chemical equation showing all of the bonds between molecules. Know the rules for counting broken and formed bonds. Identify the bonds broken on the left side of the equation. Count the bonds formed on the right side of the equation.

Q: By giving students information to take home to parents, such as a PE class newsletter, you can let parents know that their students are learning valuable lessons and skills in PE class. Letting parents know what children are learning will invite them to talk about physical education and the fun activities in PE with their children at home. If you have permission, include pictures of students while they are practicing activities in class or after school. It can help make kids feel proud of their skills and show parents exactly what happens in class. If you're a parent, watch for papers sent home about after-school activities, and ask your student what they might be interested in doing. Most of these activities are funded based on the number of students that participate, so you can show your support by having your child get involved. These activities can reinforce the teamwork abilities and physical skills learned in PE class.  For example, your student might be interested in a team sport, such as soccer, basketball, or softball. There are normally a number of different options for enrolling students in after-school team sports, including leagues sponsored by the schools or the community. Your student might also be interested in doing a more individual activity, such as yoga, dance, tennis, or golf. Many of these individual activities can be learned by attending classes that are provided by local businesses. Some communities may sponsor open classes, as well. If you have a busy schedule, you can coordinate with other parents to organize carpooling or snack duty. By allowing after school activities to use PE spaces, you are ensuring that students will have a safe and accessible place to practice sports and movement outside of the classroom. This can encourage students to pursue these activities as a lifelong endeavor. For example, you can support the soccer team in front of the school board if they request funding for new nets. Both PE classes and the soccer team will benefit from safe equipment for students. If your school does not already have a recess program implemented, encourage them to adopt one. Recess has been shown to keep students intellectually and physically engaged throughout the day. If you are a parent or student whose school does not have recess implemented for young students, you can visit a school board meeting and ask for the topic to be discussed. During teacher development classes, instruct teachers to include some physical activity in their curriculum. Encouraging students to get up and move by playing movement-based games in math, science, language or reading class can keep students' minds and bodies engaged throughout the day. For example, having time in science class where students are encouraged to plant flowers, tend to a garden, or take soil samples will get them moving and also give them hands-on science experience.
A:
Ask parents to keep physical education in mind at home. Enroll your student in after-school activities that interest them. Provide safe and accessible spaces for after-school activities. Encourage recess breaks in your school. Train teachers to incorporate PE into other subjects.