A Compound Is a Molecule Composed of Two or More

Q21: Certain sex hormones such as estrogens and

Q22: A solution with a high hydrogen ion

Q23: Substances that cannot be broken down into

Q24: Negatively charged particles in an atom are

Q25: A substance that can be dissolved in

Q27: Which of the following is NOT one

Q28: Water requires a large amount of heat

Q29: In addition to the four major elements,

Q30: Which of the following molecules contains polar

Q31: A chemical bond formed between two oppositely