The Periodic Table
The periodic table is arranged by _______________ __________________ ____________________
What is increasing atomic number?
The amount of space occupied by an object.
What is volume?
Chemistry is concerned with the study of matter and matter is made up of these?
What are atoms?
An atom is neutral, meaning it has no charge, when the number of electrons and the number of protons are equal. Define ion in a similar way.
What is "when the number of electrons and the number of protons are not equal, the atom becomes a charged particle called an ion"?
Isotopes differ in certain physical properties such as density and the rate of diffusion but these properties are identical.
What are chemical properties?
The only transition metal that is a liquid at room temperature.
What is mercury Hg?
The amount of matter in an object.
What is mass?
These two subatomic particles are located in the nucleus.
What are protons and neutrons?
Ions with this type of charge has 2 more protons than electrons.
What is +2?
Chlorine-35 and Chlorine-37 are two isotopes of chlorine. They have this same number of protons and this number of neutrons respectively.
What is 17 protons and 18 and 20 neutrons?
Elements in the same period have the same number of these.
What are electron shells?
Packed closely in a regular manner with no spaces between the particles.
What is the arrangement of particles in a solid?
This is the relative mass and charge respectively of an electron.
What is 1/1840 and -1?
Ions with this type of charge have 3 more electrons than protons.
What is -3?
These isotopes have an imbalance of protons and neutrons which makes their nuclei unstable.
What are Radioactive isotopes or Radioisotopes?
Elements in the same group have similar chemical properties because they have the same number of these.
What are valence electrons?
The change of state from solid to gas and gas to solid without going through the liquid phase.
What is sublimation?
An atom of Aluminum has a mass number of 27. This is how many protons, electrons and neutrons does it have respectively.
What are 13 protons, 13 electrons and 14 neutrons?
The electronic configuration of P3-.
What is 2.8.8?
This isotope is used to calculate the age of plants and animals less than 60,000 years old.
What is Carbon-14?
He invented the modern periodic table.
Who is Dimitri Mendeleev?
The following two processes provide evidence to support the theory that all matter is made of particles.
What are diffusion and osmosis?
An atom of Fluorine has a mass number of 19. It has this number of neutrons and its electronic configuration is this?
What are 10 neutrons and 2.7?
This is the symbol for the sulphate ion.
What is SO42-?
These radioactive isotopes are used in smoke detectors to detect smoke from a fire at an early stage.
What is Americium-241?