Periodic table
This is a representation of the known elements in our world,
What is the periodic table of elements?
These are shiny and a good conductor of electricity?
What are metals?
Made of two or more elements .
What is a compound?
The ability to transfer heat and electricity is called __________________.
What is conductivity?
Elements are identified by their chemical and _____________properties.
What are physical properties?
The periodic table is divided into these 3 groups.
What are metals, non-metals, and metalloids?
These are dull are brittle .
What are non- metals?
The smallest unit of a compound .
What is a molecule?
To calculate to find the neutron of an element you woud have to use this formula.
a. Mass - atomic # = neutrons
b. Mass- symbol= neutrons
What is mass- atomic #= neutrons?
This is an example of a chemical of property.
a. boiling point
b. dull
What is boiling point?
The periodic table has boxes that represent each __________________________.
What is an element?
Sulphur is an example of what type of element.
What is a non- metal?
The number of atoms of an element present in one molecule of a substance Ex. H2O
What is a subscript?
What can we use to remind us how to remember the number of protons and electrons of an element?
a. flower
b. ape
atomic # = proton#= electron#
This is an example of a physical property.
a. shiny
b. melting point
What is shiny?
The periodic table of elements tells us the atomic __________ of an element.
What is a number?
Silver and gold are examples of what type of element.
What are metals?
Representation of the number of atoms of each element used to identify a substance
What is a chemical formula?
The symbols of elements always start with the first letter of the element.
a. True
b. False
False
Metalloids can be shiny or __________.
What is dull?
The periodic table of elements tells us the atomic m_____ of an element.
What is mass
Al is an example of what type of element.
What is a metalloid?
Which is an example of a compound?
a. H
b. NaCl
c. Al
What is NaCl? or table salt!
This is an element( Al), because_________.
a. There are 2 letters.
b. There is one capital letter.
What is letter B.
Metalloids share characteristics of metals and _______________.
What are non-metals?