Definitions
A notation indicating the elements in a compound and the ratios of the atoms of each element.
What is a chemical formula
An atom or a group of atoms that have a positive or negative charge
What is an ion?
How many atoms of each element are in the compound AgNO3? (Ag is silver)
What is 1 silver, 1 nitrogen, 3 oxygen
What is non-polar?
This periodic table group has elements with 7 valence electrons and can gain 1 electron to become an anion with a charge of 1-.
What is the Halogens or Group 7A?
A substance that undergoes a chemical change
What is a reactant?
A molecule that has partial charges due to an imbalance in the way electrons are shared.
What is a polar molecule?
This is the number of carbon, hydrogen and oxygen atoms in a sugar (glucose) molecule with a chemical formula of C6H12O6.
What are 6 carbon atoms, 12 hydrogen atoms, and 6 oxygen atoms.
This molecule is able to dissolve many substances, like salt (NaCl) and sugar (C6H12O6), because of its polarity.
What is water (H2O)?
This noble element has the same stable electron configuration as the anion, Cl- (Chloride).
What is Argon (Ar)?
The new substance formed as a result of a chemical change
What is a product?
The force of attraction between molecules of different substances so that they tend to stick together.
What is adhesion?
This special number indicates how many atoms of Hydrogen are contained in a molecule of ammonia (NH3).
What is a subscript?
The state of matter for water that has more molecules than its solid (ice) form.
What is liquid?
True or false: This chemical equation is balanced:
N2+3H2 = 2NH3
What is TRUE?
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?
A force of attraction between atoms or groups of atoms.
What is a chemical bond?
It has one of the HIGHEST surface tensions in all of creation.
What is Water?
Describe two ways an element can achieve a stable electron configuration.
What is transferring electrons (ionic bonds) or sharing electrons (covalent bonds)?
A representation of the valence electrons of an atom that uses dots around the symbol of the element.
What is a Lewis dot structure?
A chemical bond in which two atoms share one or more pairs of valence electrons.
What is a covalent bond?
The force of attraction between molecules of the same substance so that they tend to stay together.
What is cohesion?
Calcium carbonate is an ionic substance commonly called “chalk.” If this molecule has one calcium, one carbon, and three oxygen atoms, what is its chemical formula?
What is CaCO3?
When the highest occupied energy level is completely filled with electrons.
What is a stable electron configuration?
A covalently bonded molecule in which there is a greater electron attraction for one atom over the other atom(s) leading to partial negative and positive charges.
What is a polar molecule?