Explain why atoms are always neutral in charge.

What is a compound reaction?

Which statement describes how the bond between two oxygen atoms is formed?. a) by sharing valence electrons with many other atoms. b) by the repulsion between ions of like charges. c) by the attraction of two oppositely charged ions.

What evidence would you look for that would tell you that stationary object is involved in a contact interaction

All atoms have molecules and mass so are therefore

3. A rock sample contains 80g of a potassium-40 (K10) isotope with a half-life of 1.25 billion years. How much of the potassium-40 isotope will remain after 2.5 billion years have passed? A. Og B. 10g C. 20g D. 80g

Type of ion formed by group 2A elements

Identify each energy exchange as heat or work. Drag the appropriate items to their respective bins. melted wax

23 Which term identifies a type of organic reaction? (1) deposition (3) esterification (2) distillation (4) sublimation

several kinds of bears are found on earth. most bears are brown or black, but one type of bear, the polar bear is white. What process led to to this difference in fur color.

What will be the outcome of putting litmus paper into bleach? a. red paper turns blue, blue paper turns red b. red paper does not change, blue paper turns red c. red paper turns blue, blue paper does not change d.