Periodic Table
These are found on the right side of the periodic table
Non Metals and Metalloids
Two elements chemically bonded together
Molecule
What is the name of element number 1?
Hydrogen
Name all information found on a Chemical Square from the periodic table
Atomic number
mass number
symbol
element name
A type of change where the substance stays the same, but size and shape may change.
What is a PHYSICAL CHANGE?
Direction and number of periods on periodic table
horizontal , 7 periods
Most of the matter making up earth is composed of one of the following: pure elements or compounds.
Compounds
What element has an atomic mass of 238.
U, Uranium
What elements are in group 17 ?
Halogens
Explain how water could be an example of a physical change.
ice melting
water boiling and evaporating
Number and direction of the GROUPS run on the periodic table?
18, Vertical
The properties of a compound are the same or very different from the elements that make it up.
VERY Different
What is the name of the element with the elemental symbol Zr?
Zirconium
what metals are found in group 1
Alkali Earth Metals
Type of change where a new substance is created.
What is a CHEMICAL CHANGE?
Appear in groups 3-12; represent most elements on the periodic table of elements.
Transition Metals
Two different elements bonded
Compound
Which element has 42 as its atomic number?
Mo, Molybdenum
Elements in these two periods do NOT occur in nature and infact were invented in a in a laboratory by scientist .
Lanthanide and Actinide series
Name the two indicators of a chemical change.
What are color change, bubbles, temperature change, or odor produced?
What does the term 'valence electrons' mean? (2 things)
number of electrons on outermost shell, tells how reactive an element is
give an example of a compound
Show its formula and structure
Horizontal
What element has the elemental symbol Yb?
Ytterbium
Name 3/6 Metalloids
Boron, silicon, Germanium, Arscenic, tin, Antimony, Tellerium