Definitions
The Law of Conservation of Mass
What is the idea that mass is neither created or destroyed
When a wire is cut, and the material has not been changed into a new material, this is an example of what type of change?
What is a physical change
the 3 subatomic particles and their charges
What is electron (-), proton(+), and neutron (0)
the number of protons in the atom is represented by this
What is the atomic number
What are the components of an ionic compound?
What are metal and nonmetal
An educated guess
What is a hypothesis
When a cake is baked and the original substance becomes something entirely different, this type of change has occurred.
What is a chemical change
atoms of the same element with different numbers of neutrons
What is an isotope
the number of protons and neutrons in an atom is represented by this
What is atomic mass
the number of covalent bonds that can be formed by elements in group 5
What is 3
Any atom with a positive charge
What is a cation
a blend of chicken and broth is an example of this, while the glucose we need is an example of what?
What is a mixture and a compound
JJ Thompson's discovery
What is the electron
elements on the left side of the periodic chart that tend to lose electrons easily
What are metals
the total charge of an ionic compound
What is 0
vertical column of elements that have similar chemical properties
What is a group or family
A cup of black coffee is an example of what type of mixture, while dirt is an example of what other type of mixture?
What is homogeneous and heterogeneous
the maximum number of electrons that can occupy an orbital
What is 2
Elements in group 7
What are halogens
the formula and name of the ionic compound that is formed by Lithium and oxygen
What is lithium oxide and Li2O
the energy required to remove an electron from an atom
What is ionization energy
Electrons are lost and gained in this type of bonding while they are shared in what other type of bonding?
What is ionic and covalent bonding
What did Rutherford discover about the structure of the atom?
The atom was made of a small, dense nucleus with a positive charge, but is mostly empty space. The nucleus makes up the mass while the electrons make up the volume of the atom.
Elements in group 1
What are alkali metals
the Lewis structure for SeF2
bent Draw it.