| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.19 |
| Score | 0% | 64% |
Molecules and atoms that are outputs from a chemical reaction are known as which of the following?
reactants |
|
results |
|
side effects |
|
products |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).
In which type of compound are electrons shared between atoms?
ionic |
|
covalent |
|
chemical |
|
molecular |
A compound is a substance containing two or more different chemical elements bound together by a chemical bond. In covalent compounds, electrons are shared between atoms. In ionic compounds, one atom borrows an electron from another atom resulting in two ions (electrically charged atoms) of opposite polarities that then become bonded electrostatically.
50°F is how many °C?
-10 |
|
58 |
|
10 |
|
122 |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (50 - 32)\)
\(C° = {5 \over 9} (18)\)
\(C° = {90 \over 9}\)
\(C° = 10\)
Changes to an object's speed or direction of motion are caused by which of the following?
power |
|
work |
|
a force |
|
kinetic energy |
Force is applied to change an object's speed or direction of motion.
Molecules and atoms that are inputs to a chemical reaction are known as which of the following?
products |
|
components |
|
fuel |
|
reactants |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).