Earth's
According to the geologic time scale, what is the
current period called?
a. Cretaceous
b. Jurassic
C. Triassic
d. Quaternary

Which characteristic of water it form droplets? a. low specific heat b. nonpolar structure c. high surface tension d. ability to dissolve substances

Write the chemical formula for a compound that is made of an element from group 1 and an element from group 17

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules