The distance traveled by an object divided by the time it takes to travel that distance is called a. average velocity. c. average acceleration. b. average speed. d. activity.

Which element in the third period would you expect to have the larger atomic radius, sodium (na) or sulfur (s)? a. sodium, because it has a higher effective nuclear charge attracting electrons in fewer energy levels. b. sodium, because it has fewer protons attracting electrons in the same energy levels. c. sulfur, because it has more protons attracting electrons in more energy levels. d. sulfur, because it has a higher effective nuclear charge attracting electrons in the same energy levels.

Which of these properties, used alone, would be least useful in identifying most minerals? a. color b. luster c. streak d. density

In saturated organic compounds, all the bonds between carbon atoms are called?