Designing Combustion Engines D I think
Question: When an atom that has no charge loses two electrons, it becomes a:
A: positive ion.
B: negative ion.
C: positive isotope.
D: negative isotope.
Answer:
When an atom that has no change loses two electrons, it becomes "positive ion".
Explanation:
It is known that electrons hold a negative charge. So, when the negative charge that is electrons are taken out an atom then the number of electrons become less in number as compared to the number of protons. Hence, the atom attains a positive charge.An isotope is formed when an atom shows same number of protons and different number of neutrons. So, when an atom loses 2 electrons there will be no change in the number of neutrons. Therefore, an isotope will not form.Thus, it is concluded that when an atom with no charge loses two electrons, it becomes a positive ion.
Answer:
The correct answer is option B) "is the worst oil spill in US history, causing damage to marine and coastal ecosystems".
Explanation:
The explosion on the Deepwater Horizon/BP MC252 drilling platform in the Gulf of Mexico on April 20, 2010, cause the lost of 11 workers and cause major damage of the environment. This disaster is considered the worst oil spill in US history, causing damage to marine and coastal ecosystems. About 4.9 million barrels of crude oil were spilled, which makes it the largest marine oil spill in US history.
Answer:Our solar system formed at the same time as our Sun as described in the nebular hypothesis. The nebular hypothesis is the idea that a spinning cloud of dust made of mostly light elements, called a nebula, flattened into a protoplanetary disk, and became a solar system consisting of a star with orbiting planets
Explanation:
Answer:
You can use an iodine solution to detect the presence of complex carbohydrates.
Explanation:
The yellow-orange iodine will turn blue-black as it reacts with starch. (The iodine solution will show no reaction with simple carbohydrates or sugars.)
