Elements & Periodic Table
This element is represented by the symbol Li.
What is Lithium
A solution with a pH of 12 is weakly acidic, strongly acidic, weakly basic, or strongly basic.
What is a strongly basic solution?
Under constant temperature, a sample of gas at 120 kPa expands from 2 liters to 8 liters. Calculate the new pressure in kPa.
*P1V1=P2V2
What is 30 kPa?
This is the smallest unit of an element that still has the properties of that element.
What is an atom?
The chemical formula for table salt.
What is NaCl?
This element is represented by the symbol Sn.
What is tin?
This is the name for a substance that turns blue litmus paper red.
What is an acid?
This gas has the lowest freezing point among hydrogen, water, helium, and carbon dioxide.
What is helium?
This is the name for the type of bond formed when two atoms share a pair of electrons.
What is a covalent bond?
The gas that plants absorb and humans exhale.
What is carbon dioxide?
What is a period?
This is the name of the acid found in vinegar.
What is acetic acid?
In which of these processes is heat absorbed (taken in) rather than released: evaporation, condensation, water melting, or water freezing?
What are evaporation and water melting?
This term describes the orientation of bonds around a carbon atom that has four single bonds to other atoms: trigonal, linear, tetrahedral, or planar.
What is tetrahedral?
The metal that is liquid at room temperature.
What is mercury?
These are the elements located in the far-right column of the periodic table.
What is a noble gas?
This is the name of the process by which an acid and a base react to form water and a salt.
What is neutralization?
The process by which a solid changes directly into a gas, without passing through the liquid state.
What is sublimation?
This is the name for two atoms of the same element that have the same number of protons but different numbers of neutrons.
What are isotopes?
The process by which a metal reacts with oxygen in the air, like when a copper statue turns green.
What is oxidation?
These are the most reactive family of all metals and react vigorously with water.
What are alkali metals?
This is the name of the process where you slowly add a solution of known concentration to a solution of unknown concentration until the reaction is complete.
What is a titration?
The property of a gas that decreases as its temperature rises at constant pressure, because the molecules spread farther apart.
What is density?
The type of bond formed when two atoms share electrons unequally, so that one end of the molecule is slightly positive and the other is slightly negative.
What is a polar covalent bond?
The element that is a gas at room temperature and makes up most of the air.
What is nitrogen?