The Name's Bond
a force of attraction between atoms or groups of atoms
What is a chemical bond?
a chemical bond formed between two oppositely charged ions
What is an ionic bond?
having opposite charges within the same substance
What is polarity?
a representation of a chemical reaction using chemical formulas for the reactants and products
What is a chemical equation?
compounds held together with ionic bonds
the attraction of the positive metal ions to the valence electrons of neighboring metal ions
What is a metallic bond?
when two atoms share three pairs of electrons
What is a triple bond?
a molecule that has slight positive and negative charges due to an imbalance in the way electrons are shared
What is a polar molecule?
new substances formed as a result of a chemical change
What are products?
A model of an atom in which each dot represents a valence electron
What is the electron dot diagram?
a chemical bond in which two atoms share one or more pairs of valence electrons
What is a covalent bond?
when cohesion pulls the water molecules at the surface tightly together to form a skin-like boundary
What is surface tension?
an atom or a group of atoms that has a positive or negative charge
What is an ion?
numbers that appear before a formula in a chemical equation to show how many atoms or molecules of each reactant or product are involved in the reaction
What are coefficients?
When the dot pairs of each covalent bond are replaced with a dash. (The dots do not need to be added because it is implied that there is a stable electron configuration with the covalent bond.)
What is the structural formula model?
when the positively charged hydrogen side of a water molecule is attracted to the negatively charged oxygen side of another water molecule
What is a hydrogen bond?
the force of attraction between molecules of the same substance so that they tend to stay together
What is cohesion?
atoms with a positive charge (proper name)
What are cations?
has the same number of atoms of each element on both sides of the equation
What is balanced?
A notation indicating the elements in a compound and the ratios of the atoms of each element
What is a chemical formula?
a covalent bond in which the electrons are not shared equally
What is a polar covalent bond?
the force of attraction between molecules of different substances so that they tend to stick together
What is adhesion?
atoms with a negative charge (proper name)
What are negative anions?
substances that undergo a chemical change
What are reactants?
cohesion between water molecules and and adhesion between water molecules and cells of xylem tubes that cause water to move upward in a plant
What is capillary action?