| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.13 |
| Score | 0% | 63% |
Which of the following represents the largest value?
1 kL |
|
1 mL |
|
1 ML |
|
1 cL |
Mega (M) is 106, kilo (k) is 103, centi (c) is 10-2, milli (m) is 10-3 so 1 ML represents the largest value.
__________ and __________ pair to strengthen bones.
iron, calcium |
|
vitamin D, magnesium |
|
vitamin D, calcium |
|
calcium, vitamin A |
Vitamin D helps calcium strengthen bones while also aiding muscle, nerve, and immune system function.
Elements that belong to the same period in the Periodic Table of the Elements have the same number of:
electron shells |
|
electrons |
|
atomic mass units |
|
protons |
The rows of the Periodic Table are called periods and contain elements that have the same number of electron shells ordered from lower to higher atomic number.
An element in the physical state of __________ maintains a constant volume and shape.
solid |
|
liquid |
|
gas |
|
gel |
An element in a solid state has atoms or molecules that are constricted and do not move freely. Solids maintain a constant volume and shape and exist at a lower temperature than liquids or gases.
Which of the following is metamorphic rock?
obsidian |
|
granite |
|
coal |
|
marble |
The Earth's rocks fall into three categories based on how they're formed. Igneous rock (granite, basalt, obsidian) is formed from the hardening of molten rock (lava), sedimentary rock (shale, sandstone, coal) is formed by the gradual despositing and cementing of rock and other debris, and metamorphic rock (marble, slate, quartzite) which is formed when existing rock is altered though pressure, temperature, or chemical processes.