In both types of reactions, new substances are formed and there are changes in energy. However, endothermic reactions absorb energy, whereas exothermic reactions release energy. Reteach Change the boldface sentences into questions, and call on students to answer them.
The average monthly cell phone bill has soared in recent years to well over $100. A study earlier this year found that Verizon (VZ) was the most expensive carrier, with an average customer bill of $148 a month. Sprint (S) and AT&T (T) weren't that far behind, and T-Mobile (TMUS) was the least expensive of the Big Four carriers at $120.
Calls typically cost between 5p and 12.5p per minute for landline customers. From a mobile phone, calls may cost between 25p and 41p per minute. Services provided on these numbers are regulated by *PhonepayPlus to provide additional protection for callers.You can fi nd out more information at www.phonepayplus.org.uk.alls from other fi xed networks typically cost up to 10p per minute. From some mobile networks calls typically cost between 20p and 40p per minute. Recently some other providers have also included calls to 0845 and 0870 numbers in call packages, making them free at certain times of the day.