In the process of cooking, making tea, or mixing paint, you combined substances. Sometimes, the act of mixing substances results in the formation of new substances. If two substances mix and one or more new substances form, a chemical change has occurred. Which event do you think results in a chemical change?

A.
Oil and vinegar mix to make salad dressing.

B.
Copper and zinc mix to make brass.

C.
Salt and water mix to make salt water.

D.
Sugar and water mix to make sugar water.

Need on both questionswill markbr />

What happens when the temperature of a solution increases?

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