Atoms
_____ are the basic particles of the chemical elements and the fundamental building blocks of matter.
What is a Atom?
_____ is a group of two or more atoms that are held together by attractive forces known as chemical bonds.
What are Molecules?
_____ is the attraction between atoms or ions that allows them to form molecules, crystals, and other structures.
What is a Chemical Bond?
This Molecule can be in 3 different states of matter.
What is water?
Power of Hydrogen is abbreviated to this.
What is pH?
_____ states that no more then 8 electrons balancing on a valance shell at a time.
What is the Octet Rule?
How you can determine how many possible bonds a molecule can have.
What do are the free electrons in the outer valence shell.
An Electronegativity difference of 2.4 makes this kind of bond.
What is an Ionic bond?
This molecule is often referred to as the backbone. (200 bonus points for why)
Carbon (Carbon has 4 electrons free, meaning it can make 4 possible bonds.)
The scientific notation of pH 7 and considered what on the scale?
0.0000001 (1-7) and neutral (Water)
True or False?
Anion's are positively charged.
Cation's are negatively charged.
False.
This very abundant element can make 2 possible bonds.
What is Oxygen?
An Electronegativity of 0.4 makes this kind of bond.
_____ is the chemical property of a molecule that is seemingly repelled from a mass of water.
Hydrophobic
Scientific Notation of pH 3 and what is that on the scale
0.001 (1-3) and Acidic (Sauerkraut)
33As+1 is the atomic symbol for this element.
What is the atomic symbol for Arsenic that has lost an electron?
The atomic weight of this molecule is 58.44 g/mol
What is the atomic weight of NaCl (Sodium Chloride)
An Electronegativity of 0.6 makes this kind of bond.
What is a Polar Covalent Bond.
Having an affinity for water; readily absorbing or dissolving in water.
Hydrophilic.
Scientific Notation of pH 12 and what does that mean on the scale
0.000000000001 (1-12) and Base (Bleach)
An atom has 12 protons, 12 electrons, and 14 neutrons. Identify the element, the mass number, and whether it is neutral or charged.
What is magnesium, mass number 26, and neutral?
[Daily Double]
A molecule contains many carbon–hydrogen (C–H) bonds. Is this molecule more likely to be hydrophilic or hydrophobic
Hydrophobic, because C–H bonds are non-polar and do not interact strongly with water.
_____ is a specific type of molecular interaction that exhibits partial covalent character and cannot be described as a purely electrostatic force.
What is a Hydrogen Bond?
Water droplets form beads on a waxy leaf instead of spreading out. Which two properties of water explain this behavior, and what causes them at the molecular level?
What are cohesion and surface tension, caused by hydrogen bonding between water molecules?
True or False.
The more acidic something is, the more Hydrogen atoms are concentrated in the solution.
True