Mixture bubbles and a gas emitted is that physical or chemical change

What is the pH of a solution in which the [OH-] = 1x 10-5?

What would you get if you could break an element into its smallest

True or false a scientists opinion is a valid source of information to use in a scientific investigation?

What are some things that could happen to you if you have an electrolyte imbalance?

How many moles are in 199 grams of CCl4 (molar mass = 153.82g/mol)

Iron metal has a specific heat of 0.449J/g°C. How much heat is transferred to a 5.00 a piece of iron, initially at 20.0°C, when it is placed in a beaker of boiling water at 1 atm? Use Q = mcAt formula For chemistry

Which type of change occurs when the electrons of two atoms interact to form an atomic bond?

Which of the following is considered electronically perfect? a) Potassium b) Magnesium c) Argon d) Chlorine

The area of the circular base of a can of dog food is 12.5 in. The can is 6 inches high. What is its volume?

What is the tested variable in the experiment?