1. One of the essential minerals in the human body is salt. How much salt (NaCl) is in the average adult human body?
2. If you fill a glass to the brim with ice water and the ice melts, what will happen?
3. Water-based liquids can be described as acidic, neutral, or basic, with respect to pH. Which of these describes milk?
4. DNA codes for proteins, which are the building blocks of organisms. What is the most abundant protein in the human body?
5. Noble gases are inert because they have completed outer electron shells. Which of these elements isn't a noble gas?
6. What is the most common isotope of hydrogen?
7. You can't live without water! What is its chemical formula?
8. Who is credited with the invention of the modern periodic table?
9. Organic chemistry is the study of the compounds that make up living organisms. All organic molecules contain:
10. What do you call an atom that has more protons than electrons?