Periodic Trends
The higher the electronegativity, the higher the likelihood for the atom to become an anion
(True/False)
True
Chemical bond formed when two atoms share one or more pairs of valence electrons. What is this?
Covalent Bond
What is a physical change?
Changes that DO NOT create a new substance or change the chemical composition.
What are the properties of a solid?
Think about definite shape and volume
A solid has a definite shape and volume
The pH scale ranks different __________ based on their _____ levels.
aqueous solution, acidity.
What element has the most electronegativity and the least electronegativity?
Fluoride has the most electronegativity, and Francium the least electronegativity
Occurs when electrons are transferred from one atom to another.
Ionic bonds
AB + CD ---> AD + CB
What type of reaction is this?
Double Displacement
compressing a gas is easier than compressing a solid or a liquid due to the space between particles.
(true/false)
True
The more hydroxide ions (OH-) the more acidic a solution is.
(true/false)
False
The ability of an Atom's inner electrons to shield its nucleus. What is this called?
Electron shielding
Occurs when the shared are not equally shared. This occurs when one atom has higher electronegativity.
What type of bond is this?
Polar covalent bond
AB + C -----> AC + B
What type of reaction is this?
Single displacement
How many states of matter are there? And what are they?
There are 4 states of matter. Solid, liquid, gas, and plasma.
If Timmy dips a blue litmus paper into a solution and it stays the same, but then he dips a red litmus paper into a solution and that one stays the same too, what does that mean?
It means Timmy's solution is neutral
Name three groups in the periodic table.
All groups: Alkali metals, Alkaline earth metals, Lanthanides, Actinides, Transition metals, Boron group, Carbon group, Pnictogens, Chalcogens, Halogens, Noble gases.
What are the three types of intermolecular forces?
Dipole-Dipole interaction, Hydrogen bond, London Dispersion forces.
occurs when two(or more) atoms or molecules come together.
What type of reaction is this?
Combination reactions/synthesis reactions
Give 5 examples of gases.
Oxygen, helium, hydrogen, carbon dioxide, nitrogen, etc.
On the pH scale each pH jumps by ___, if so than
how much greater is a pH of 3 acidic compared to a pH of 6?
10x
and it would be 1000x more acidic
From top to bottom does metallic character increase or decrease?
Increase
Strong chemical bonds that hold atoms together within a molecule. What type of force is this?
hint: They are located within a SINGLE molecule and hold the atoms together.
Intramolecular forces.
CH4 + O2 -------> CO2 + H2O
What type of reaction is this?
Combustion
What are examples of plasma? and where can I find it?
Space. some examples are lighting and stars.
OH- > H3O+
Is this solution more acidic or more basic?