In your lab group you combined vinegar and water and observed the results shown in the picture. Choose ALL of the evidence that supports that a chemical change has occurred. A) A gas is produced
B) The color changed
C) Bubbling occurred
D) The baking soda dissolved
E) There is a change in the composition of the reactants.

An observation that requires measurement is called quantitative observable or qualitative

Select the correct answer from each drop-down menu.describe what happens to a carbon-11 atom when it undergoes positron emission.the decay of a carbon-11 atom _1_, and this causes it to emit _2_.options for 1: > changes a neutron into a proton> changes a proton into a neutron> is hit with a neutron> reconfigures its protons and neutronsoptions for 2: > a negatively charged electron-sized particle> a positively charged election-sized particle> two atoms and several neutrons> two neutrons and two protons

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature