Unidad 2 etapa 1 actividades para todos gramatica c page 42

The effects of acid rain include: a. acidic lakes and streams b. erosion of heavy metals into the water cycle c. damage to leaves d. all of the above

How do ionic bonds differ from covalent bonds? A. electrons are transferred in a covalent bond. B. protons are transferred in a covalent bond. C. electrons are shared in a covalent bond. D. protons are shared in a covalent bond.

What are solid mixtures in a avarage class

The process by which an animal becomes accustomed to its situation is referred to as A. Habituation B nurturing C aggression D desensitizating

Which of the following is an example of objects in thermal equilibrium?

How does light pollution affect plants and animals? Light pollution harms plants and animals because they confuse it with

In what ways are polyatomic ions like simple ions

How does oxygen obey the octet rule when reacting to form compounds? A) It gains electrons. B) It gives up electrons. C) It does not change its number of electrons. D) Oxygen does not obey the octet rule.

Which equation obeys the law of conservation of mass? A. 2Fe+3O2 - -> 2Fe2O3 B. 4Fe+O2--> 2Fe2O3 C. Fe+O2--> Fe2O2 D. 4Fe+3O2--> 2Fe2O3

Why do airbags fill evenly with gases?