A substance undergoes a change.

Which statement indicates that the change was a chemical change?

What occurs at one of the electrodes in both an electrolytic cell and a voltaic ccl1? (I) Oxidation occurs as electrons arc gained at the cathode. (2) Oxidation occurs as electrons are lost at the anode.

What kind of non-flowering plant produces seeds instead of spores? Answers: 1: Evergreens 2: Ferns 3: Fruit trees 4: Mosses

The decomposition of SOCl2 is first-order in SOCl2. If the half-life for the reaction is 4.1 hr, how long would it take for the concentration of SOCl2 to drop from 0.36 M to 0.045 M?

Compare how an increase in wavelength affects sounds and light waves.

How many miles of H2O are produced when 0.322 mol of octane is burned?

Where does transcription happen? why is it only in this location?

True or false during decomposition nitrogen gas is changed into nitrogen compounds

Which of the following is a suggested practice to invite families to participate in decision-making and goal-setting for their child? A. Advocacy events B. Take-home backpacks C. Family/teacher conference D. Weekly newsletters

TRUE OR FALSE A stable mixture of two or more mixable substances is called an emulsion

A chemical engineer is developing a process for producing a new chemical. One step in the process involves allowing a solution of potassium hydroxide to react with a solid. Which action would most likely increase the reaction rate for this step?