Anything that has mass and volume
What is matter?
This Russian scientist is considered to be the father of the periodic table.
Who is Mendeleev?
Where neutrons and protons are located in an atom
What is the nucleus?
The outermost occupied energy shell of an atom
What is the valence shell?
The type of compound made up of a cation and an anion
What is an ionic compound?
These are made up of one type of atom and cannot be broken down into simpler substances
What is an element?
A vertical column of elements in the periodic table
What is a group?
The modern periodic table is organized based on this property of each element.
What is atomic number? Or, what is number of protons?
The element found in group 17, row 3.
What is chlorine?
The charge of an iron (III) ion
What is 3+?
These are pure substances that consist of two or more elements and can be broken down chemically, but not physically
What are compounds?
The most stable (non-reactive) group of elements on the periodic table
What are the noble gases?
What a neutral atom becomes when it gains or loses electron(s)
What is an ion?
The number of electrons in a sodium atom
What is 11?
The chemical formula of dioxygen pentafluoride.
What is O2F5?
The type of reaction in which energy is released from the system.
What is an exothermic reaction?
Group 2 metals
What are the alkaline-earth metals?
Atoms in the same group have the same number of these.
What are valence electrons?
These type of elements become more reactive as you move down the periodic table
What are metals?
The chemical formula of magnesium nitrate.
Colour, malleability, texture, boiling point, melting point, hardness, and solubility are all examples of this type of property.
What are physical properties?
Elements that are shiny and solid at room temperature, but also brittle and poor conductors of heat and electricity.
What are semi-metals?
A magnesium ion has the same electron arrangement as this element
What is neon?
The reason why atomic size decreases moving left to right across a period
What is the number of valence electrons increase but the number of valence shells stays the same. More protons in the nucleus results in a stronger positive charge that pulls the electrons closer to the nucleus.
The name of the compound NiSO4
What is nickel (II) sulphate?