Uranium-235 and plutonium-239 are used in nuclear reactors because of their 1. ability to undergo fission 2. ability to undergo fusion 3. inability to absorb neutrons 4. inability to release neutrons

Which example shows an ecosystem of organisms? A. a single monkey B. a group of tree monkeys C. a group of tree monkeys and a cluster of trees D. a group of tree monkeys, a cluster of trees, a pile of rocks, and a fierce wind

How has scientists' understanding of the atoms changed over time?

If element x has 63 protons how many electrons does it have?

A solid substance turns into a liquid. Which best describes this change?

Which of the following is not a form of radiation? Radio waves or sound waves or microwaves or gamma waves

plate a and plate b are both continental plates. what is ghe most likely result if the two plates collide?

According to the second law of thermodynamics, the entropy of any system always increases. According to the second law of thermodynamics, the entropy of any system always increases. True False

If the density of Cu is 8.96g/cm cubed, what is the volume of 28kg of Cu?

A piece of iron can change in different ways. How is iron bending different from iron rusting?

Which organism would least likely be selectively bred A) Dandelions B) Nantes Carrots C) Belgian Blue Cattle D) Hypoallergenic Cats