John Dalton believed which of the following about atoms? Atoms are real even though they're invisible.
The atom could be divided into smaller parts.
All atoms of a single substance are identical.
Atoms of different substances differ by weight.

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.

Amixture that has two or more substances that are spread out evenly is called a. compound b. heterogeneous c. substance d. homogeneous

What causes most sediment to wash or fall into a river