In the classification of matter chart, letter B. would be a (n) A) acid. B) compound. C) element. D) solution.

How many significant figures should be written in the sum 4.56 g + 9.032 g + 580.0078 g + 540.439 g? a. 3 b. 4 c. 5 d. 6 e. 7?

Which of the following is a disaccharide? A. Glucose B. Sucrose C. Fructose D. Galactose

Hydrogen gas and oxygen gas can be combined to produce liquid water. If 15.0 g of each gas is combined, a. W hat mass of water will be produced, assuming the reaction runs to completion? b. Which reactant will remain, and how many grams?

If I want to say HCl (g), do I need to say the gas form of hydrogen chloride or hydrochloric acid?

3. Infer How is mass conserved during a chemical change?

Where did the earth hold most of its original water

Giovanni created this chart to study for an exam. A 2-column table titled common ionic compounds. The first column labeled compound has entries sodium hydroxide (N a O H), iron oxide (F e O), calcium chloride (C a C l subscript 2), calcium carbonate

Consider the two electron arrangements for neutral atoms A and B. What is the difference between atom A and atom B? A - 1s22s22p63s1 B - 1s22s22p65s1 Atom B has lost some inner electrons.

Choose all the answers that apply. Which of the following has kinetic energy? rolling ball, moving car, book on a table, spinning top, or a falling tree.

Which of the following statements about the suns feature is true?