The Periodic Table Flashcards
How are elements arranged in the periodic table?
Based on similar chemical properties.
Name the scientist who arranged elements into the periodic table:
Mendeleev
Why were gaps left in the old version of the periodic table?
For undiscovered elements.
Name three metals:
Iron, Copper and Zinc
Name three non-metals:
Carbon, Nitrogen and Oxygen
Where do you find metals in the periodic table?
Left hand side
Where do you find non-metals in the periodic table?
Right hand side.
The bar chart below shows the melting point of period 2 elements. Describe the trend in melting point?
As you go across period 2, the melting point increases from lithium to carbon.
The melting point then decreases further along period 2, from nitrogen to helium.
State three properties of metals:
High density, ductile, shiny
State three properties of non-metals:
Brittle, dull, low density
State three properties of alkali metals:
Good conductor of heat and electricity. Shiny when cut. Low density - floats on water.
Complete the following word equation:
Sodium + Water
Sodium hydroxide + Hydrogen
Complete the following word equation:
Lithium + Water
Lithium hydroxide + Hydrogen
Write the chemical formula for potassium hydroxide:
KOH
Describe how to test for hydrogen gas:
Squeaky pop test. Use a lit splint.
Describe the trend in reactivity of Group 1 elements:
Reactivity increases down the group.
State two properties of Group 7 elements:
They do not conduct electricity. They have low melting points.
State what is meant by the term ‘displacement reaction’?
A reaction where a more reactive halogen displaces a least reactive halogen.
Complete the following word equation:
Potassium iodide + chlorine
Potassium chloride + Iodine
Give three examples of noble gases:
Helium, Argon, Xeon
State one use of helium:
Used in balloons
State one use of neon:
Used in advertising signs.
Describe one chemical property of the noble gases:
They are unreactive. Noble gases do not react with any element/ compound.
Look at the table below. Describe the trend in boiling points of noble gases:
As you go down group 0, the boiling point increases.
Helium has the lowest boiling point.
Xenon has the highest boiling point.
