What laboratory activities involve chemical changes

Scientific conclusions are based on?

A natural resource that is naturally formed much more slowly than we use it is called

What are the subscripts in the empirical formula of this compound? enter the subscripts for c, h, and o, respectively, separated by commas (e. g., 5,6,7) ?

Is the benefit gained by each individual in a mutualistic relationship equal? Why or why not?

An unconformity is an __ of rock

Identify the element that chlorine forms a covalent bond with

A child pulls a sled up a snow-covered hill. The child does 405 J of work on the sled. If the child walks 15 m up the hill, how large of a force must the child exert?

A piece of glass with a mass of 32.50 g specific heat of 0.840 J/g*°C and an initial temperature of 115 °C was dropped into a calorimeter containing 57 g of water (specific heat 4.184 J/g*°C).

Which of the following is the most likely description of the product or products of a double-displacement reaction? A) one new compound B) two new compounds C) oxygen and energy D) one new compound and an element

A balloon is filled with 12L of air at a pressure of 2 atm. What is the volume of ballon if the pressure is changed to 3 atm?