Periodic Table History
Which chemist developed the periodic table?
Dimitri Mendeleev
Name the first five elements of the periodic table.
Hydrogen, Helium, Lithium, Beryllium and Boron
Where on the periodic table are metals found?
They are found on the left side of the periodic table.
Where on the periodic table are non-metals found?
On the right side of the periodic table.
How many groups are within the periodic table?
Their atomic number
Which element within the periodic table is known as the laughing gas and in which popular business place can it be found in?
Helium and in dentist office.
Which of the following are properties of metals?
A) Brittle
B) Good conductor of electricity
C) Dull in appearance
D) Low melting points
B) Good conductor of electricity.
Which element is found on the metal section but is actually a non-metal?
Hydrogen
What are group one members called? And describe their reactivity going down the group.
Alkali metals. Their reactivity increases going down the group, which makes some of them unsafe to use in the lab.
What are elements?
Elements are substances that cannot be broken down into anything simplier.
Which elements are at number 8,12 and 19 of the periodic table.
Oxygen, Magnesium and Potassium
Provide 5 examples of metals.
Iron, Copper, Aluminum, Gold, Magnesium, Sodium, Zinc
Name 3 properties of metals.
They are poor conductors of heat and electricity.
They are dull in appearance
They have low melting and boiling points
Which groups are known as transition elements/metals?
Groups 3-12
How are elements created within the periodic table?
They are created naturally and artificially using accelerators.
What can food/household item can potassium and chlorine be found in?
Ripe banana and bleach.
Name any 3 properties of metals.
Metals are good conductors of heat and electricity.
They are shiny in appearance
High melting and boiling points.
Name any 5 non-metals
Neon, Helium, Carbon, Xenon, Chlorine, Flourine, Nitrogen
What are group 17 elements called and describe their reactivity going down the group.
Halogens and reactivity decreases going down the group.
How many elements are within the periodic table?
There are a 118 elements within the periodic table.
The chemical symbol “Ca” is used to represent which element? and what number is it in the periodic table?
Calcium and 20
Riddle me this, riddle me that, I am a metal and I am found in wires and computer chips. Who am I and what's my symbol?
Copper (Cu)
Riddle me this, riddle me that I am a non-metal and I am a by-product of photosynthesis which is inhaled by humans. Who am I and what's my symbol?
Oxygen (O)
Name any 2 elements of group 1 and group 17.
Flourine, Chlorine - Group 17