Which of the following most likely has a repeating three dimensional structure? A. Ketchup
B. Plastic
C. Diamonds
D. Sugar

Litmus paper is made from water-soluble dyes which are extracted from lichens. this paper is used as an acid-base indicator. which of these common household substances would turn blue litmus paper red? a) bleach b) lye c) soap d) vinegar

How did planetesmals form planets? a. they broke apart into smaller chunks.b. they collided and stuck together.c. they cooled and pulled ice together.d. they began to rotate.

When a scientific theory has been tested and proved by the scientific community, it becomes a law