Properties of Water
Water molecules stick together via hydrogen bonding, thanks to its polarity
What is cohesion?
A molecule is thousands of repeating monomers long
What is a polymer?
a chemical equation that includes multiplier coefficients to represent that the amounts and types of atoms on the reactants side are equal to those on the products side.
What is a balanced chemical equation
Elements in these have the same number of valence electrons/bonding patterns.
What are groups?
The atomic number tells you the number of which subatomic particle?
What are protons?
Electrons are unevenly distributed. Resulting in a slight positive charge at the hydrogen end, and a slight negative charge at the oxygen end.
What is polarity?
A single subunit of a polymer
What is a monomer?
A number added to the front of a chemical formula for a molecule which shows the amount of the molecule needed to balance a chemical equation
What is a coefficient?
What happens to atomic radius as you move down a group on the periodic table?
What is increases?
The subatomic particle that changes in an isotope
What are neutrons?
Water molecules stick to other substances such as glass or wood.
What is adhesion?
Have low polarity, low strength, and low melting points across most of the polymer
What are thermoplastics
This law states that matter is neither created nor destroyed in a chemical reaction
What is the Law of Conservation of Matter?
The ability of an atom to attract electrons in a bond
What is electronegativity?
The subatomic particle that changes in ions
What are electrons?
Cohesion between water molecules makes this possible.
What is surface tension?
Create a stable, net-like, 3-D structure that permanently restricts the movement of the polymer chains in thermosets
What are sulfur bridges?
True or False: Balancing equations changes the type of elements involved in the reaction.
What is False?
Does electronegativity increase or decrease across a period?
What is increase?
This subatomic particle identifies the element
What are protons?
Water can absorb and hold a lot of heat energy without changing temperature too quickly.
What is high specific heat?
Bonds formed across chains or repeating subunits. Common in all thermoset plastics.
What are cross-links?
If the reactant side of an equation has 4 oxygen atoms, how many oxygen atoms must be on the product side?
What is 4?
Why does electronegativity decrease down a group?
What is because electrons are farther from the nucleus?
These two subatomic particles make up the mass of an element
What are the protons and neutrons?