Atoms
Atoms make up everything -- true or false?
True
The Periodic Table of ...
Elements
Solids, Liquids and ...
Gases
Ionic bonds involve the _______________ of electrons
transfer
In covalent bonds, electrons are ...
shared
What are the 3 subatomic particles called?
Protons, Neutrons and Electrons
Approx. How many elements are there in the known universe?
118
Which state of matter has the highest internal energy?
Gas
Group 1 elements have 1 electron in their outermost shell, they lose this to become a ...
positively charged ion (1+)
The outer shell of electrons are sometimes called...
valence electrons
An atom has an equal number of protons and electrons, true or false?
True
In what group do we find the alkali metals?
Group 1
low melting / boiling points
Group 7 elements have 7 electrons in their outer shell, they gain 1 electron to become...
a negatively charged ion (1-)
How many electrons go into a single covalent bond
2 - 1 from each element involved in the bonding
What was the name of the earlier model of an atom, suggested by JJ Thompson
Plum Pudding Model
Group 7 are called the...
Halogens
What is the name of the change of state from solid to liquid?
Melting
Describe what happens to a group 6 element when it becomes an ion
They gain 2 electrons to get a 2- charge
Grab a whiteboard and draw a dot and cross diagram to show the bonding in H2
see the board
The numbers on the periodic table are the atomic number, and the...
mass number
What is the name of the scientist who arranged the elements into the modern periodic table?
Mendeleev
Is boiling exothermic, or endothermic?
What is the formula of the substance Aluminium Chloride, it is made from Al3+ and Cl-
AlCl3
diamond and graphite are both made of the same element, but in a different structure. What is that element?
carbon