What are the four ways to tell if a chemical change has occurred?

As a system becomes less random, its entropy * decreases remains the same increases

What is the most likely formula for an oxide formed between group a 1 atom x and oxygen

The cyclohexane ring is essentially free of ring strain because Check all that apply. in cyclohexane, the C-C-C angle is very close to the tetrahedral angle. all the carbon-hydrogen bonds are staggered.

If the half life of a radioactive isotope is 5000 years, how much of the radioactive isotope in a specimen will be left after 10000

I need the word for this definition, behavior in which a scientist does not follow the law

The atomic mass of fluorine in 19.0 amu, so the molar mass is?

A rod shaped organism with no nucleus commonly found in Garbage will most likely belong to which kingdom

Alka-Seltzer is a solid mixture of two substances, sodium bicarbonate (NaHCO3) and citric acid (H3C6H5O7). The substances react to form water, carbon dioxide (CO2), and Na3C6H5O7.

Four properties of water are listed. 1. It is colorless and odorless in its pure form. 2. It reacts with metals to form metal hydroxide and hydrogen gas. 3. When heated to 100 °C, water evaporates. 4. It decomposes to form hydrogen and oxygen.

Water is A. Acidic B. Basic C. Neutral