1. Think about chemical reactions in your everyday life. How might it help to know about different types of chemical reactions? 2. Consider the equation A + B --> AB. Can you think of another situation you have encountered (outside of this course) where a process in this general form takes place?
3. Describe a chemical reaction that you have recently witnessed. How did you know that it was a chemical reaction? What type of chemical reaction do you think it was?

What terms describes being out of water after being submerged

If the nucleus of a cell was removed the cell wouldn’t be able to make proteins because

80 points pls brainliest 1. what does a red shift mean? blue shift? 2. describe the big bang theory. according to this theory, how old is the universe? 3. scientists believe the universe is expanding. what is the evidence that supports this? 4. describe a nebula. 5. describe the 3 types of galaxies. what is a barred spiral galaxy? 6. what is a light year? how far is alpha centauri from earth? 7. describe the universal law of gravitation. be sure to include gravitational force between two objects. 8. describe the planets’ orbits around the sun. 9. what is the asteroid belt? where is it located? 10. describe rotation and revolution of earth. what determines an earth day and year? 11. how do galaxies exist? 12. compare and contrast the inner and outer planets. 13. what causes the seasons?