Indicate which type of chemical reaction (synthesis, decomposition, single-displacement, double displacement or combustion) is being represented

Agood hypothesis includes which of the following? a: prediction b: data c: uncertainty d: conclusion

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?

As air becomes more dense, (select all that apply) o. air weighs less o. gas molecules are closer together o. air is colder o. air weighs more o. gas molecules are further apart o. air is hotter