| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.94 |
| Score | 0% | 59% |
Elements in the same group in the Periodic Table of the Elements have the same:
number of electrons in their outer electron shell |
|
number of atomic mass units |
|
number of electrons |
|
number of electron shells |
The columns of the Periodic Table are called groups and all elements in a group have the same number of electrons in their outer electron shell. The group that an element occupies generally determines its chemical properties as the number of outer shell electrons establishes the way it reacts with other elements to form molecules. So, because each element has the same number of electrons in its outer shell, each has similar reactivity.
__________ is caused by a lack of Vitamin C.
diabetes |
|
scurvy |
|
anemia |
|
shingles |
Scurvy is a difficiency disease caused by a lack of Vitamin C in the diet.
The __________ is a system of muscles that allows breathing.
diaphragm |
|
trachea |
|
pulmonary |
|
bronchioles |
The diaphragm is a system of muscles that allows breathing. During inhalation, the diaphragm expands and air rushes in to fill the space created. Then, during exhalation, the diaphragm contracts and forces the air back out.
During digestion, after proteins are broken down where does the undigested food go next?
large intestine |
|
small intestine |
|
esophagus |
|
stomach |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Meteoroids, meteors and meteorites are categorized based on which of the following?
their temperature |
|
their size |
|
their location |
|
their density |
Smaller rocks shed by asteroids and comets are called meteoroids. When these rocks reach Earth's atmosphere, they burn up in the mesosphere and become meteors. If a meteor manages to reach the Earth, it is called a meteorite.