(science)
When scientists see the letters “Au,” they know it means “gold.” What is Au?

the colour

the element symbol

the atomic number

the element's section

Which sentence about particles in matter is true? a. atoms are present in solids and liquids but not in gases. b. the particles of matter are in constant motion. c. the same kinds of atoms are found in different elements. d. when a solid changes to a liquid, the sizes of the particles change.

The three types is stress that act on earths rocks are compression, tension, and

Chortling is used to clean water. another possible atom that would also work is a. sodium b. sulfur c. bromine