Which statement(s) is/are IRUE about reactants in chemical reactions? SELECT ALL THAT APPLY
Reactions can sometimes go in both
a directions, reversing between reactants and
products.
HReactants are always written on the left side
of the arrow in a chemical equation.
Reactants cannot be regenerated once they
c
Mreact to form products.
Reactants are present at the beginning of a
d
mreaction and rearrange to form new products.

Fill in the blank. the number of each type of element in the compound (other than 1) is represented by a small number to the right of the element symbol.

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

Ways that industry and agriculture use physical properties to separate substances