Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Biology Quiz 2/3
| Question | Answer |
|---|---|
| Any substances that occupies space and has mass | Matter |
| Smallest unit of matter | Atom |
| Element A + Element B | Molecule |
| Where is the atomic number of an element on the Periodic table? | Top left |
| Largest subatomic particles in an Atom | Protons, Electrons, Neutrons |
| The number of Protons plus the number of Neutrons determines | An atoms mass number. |
| Type of molecule that contains two or more different types of atoms. (ie: Water H20) | Compound |
| Type of covalent bond that forms between two atoms with different/shared equally electronegativites. | Polar Covalent Bond |
| Type of covalent bond that forms between two atoms of the same element or between different elements that share electrons equally. | Nonpolar Covalent Bond |
| The electrical attraction that forms between ions with opposite charges. | Ionic Bond |
| Weak interactions between two polar molecules | Hydroen Bonds |
| Hyodrophilic | Hydro=Water Philic=Loving |
| Hydrophobic | Hydro=Water Phobic=Fearing |
| Can be solid, liquid or gas | WATER |
| A substance capable of dissolving other molecules | Solvent |
| A substance that is dissolved in a liquid | Solute |
| Homogeneous mixture in which water acts as the solvent, dissolving another substance, known as the solute. | Aqueous Solution |
| Substance stays balanced | Homeostasis |
| Measure of concentration of hydrogen ions (H+) in a solution | pH |
| Higher hydrogen ions mean | More acidic (<7) |
| A substance taht increases the H+ concentration in a solution by having hydrogen atoms dissociate | Acid |
| A substance that decreases the H+ concentration in a solution by providing OH- or other negatively charged ions which reduce their concentration in the solution. | Base |
| Below 7 on pH scale | Acidic |
| Above 7 on pH scale | Basic (weak) |
| Maintain pH balance - absorbtion | Buffer |
| Mass of an electron | Zero |
| Atom with a positive charge = | More protons than electrons |
| Why is water considered a Polar Molecule? | Oxygen end of the molecule has a slight negative charge, and the hydrogen end has a slight positive charge. |
| Does not require electronic transfer | Hydrogen Bond |
| The atomic number of an atom or element is | the number of protons in the nucleus |
| True or False: In a bond between Sodium and Chlorine, Chlorine donates an electron. | False |
| In the following reaction, what type of bond is holding the two atoms together? K+CI → K* + CI- → KCI | Ionic Bond |
| Water molecules have one oxygen atom that is more electronegative than the two hydrogen atoms bound to it. As a result, which type of bonding holds water molecules together? | Polar Covalent Bonding |
| True or False: In a Covalent Bond atoms share electrons? | True |
| The pH of urine ranges between 5.5 to 6.9, indicating a | weak acidic solution |
| Relative to a pH of 6, a pH of 4 has a | 100 times higher H+ concentration |
| The pH of bile ranges between 7.8 to 8.6, indicating a | weak basic (alkaline) solution |
| Expected pH for blood | 7.4 |
| Consider a mixture of blood, which contains sodium chloride, the sodium chloride is the: Solute, Solvent or Solution? | Solute |
| When NaCI dissolves in water, NaCI is considered the | Solute |
| True or False: A pH value of 6 indicates a solution containing a weak acid? | True |
| An individual water molecule contains ___ atoms and enters into ___ hydrogen bonds with other water molecules? | Three ; Four |
| Water molecules attract one another via: | Hydrogen Bonds |
Created by:
LHigh89
Popular Biology sets