2. What happens to the nucleus of an atom when the atom is involved in a chemical reaction? *
O It gains or loses electrons.
O It gains or loses protons.
O It gains or loses neutrons.
0 It does not change.
Lant

Fossils can only be formed when? if mud, silt or tar is in the area to preserve the fossil ierosion does not occur and allows the fossil to form oxygen and microorganisms cannot decay the bones the area is dry and does not contain mud or silt

Anton created a chart listing different types of materials. which best complete the chart?

Categorize each term as something that is typical of a scientific theory, a scientific hypothesis, or both. makes predictions