Day 23 (chemistry) Flashcards
Where in the periodic table will you find the non-metals?
Towards the top on the right-hand side
In the periodic table, elements are arranged in order of increasing….
Atomic number
A element burns in air to form an oxide which dissolves in water to give an acidic solution. What doe this tell you about the element?
The element is a non-metal
What name is commonly given to the group 1 elements in the periodic table?
Alkali metals
What name is commonly given to the group 7 elements in the periodic table?
Halogens
Why do elements in the same group of the periodic table have similar properties?
They have the same number of outer shell electrons
Why are the elements in in group 0 (noble gases) generally unreactive?
They have a full shell of outer electrons
Complete the word equation: Magnesium + Oxygen –>
Magnesium + Oxygen –> Magnesium Oxide
What is a halide?
A compound containing a halogen combined with a metal
Give two observations you would expect to see when lithium is added to water
The metal floats, fizzes, moves and dissolves/disappears
Give three observations you would expect to see when potassium is added to water
The metal moves on the surface of the water, ignites and burns with a lilac flame, fizzes and dissolves/disappears
Complete the word equation: Sodium + Water –>
Sodium + Water –> Sodium Hydroxide + Hydrogen
Universal indicator is added to water and then sodium is added. What colour would you expect the indicator to turn?
Purple/violet
Complete the word equation:
Aluminium + Hydrochloric Acid –>
Aluminium + Hydrochloric Acid –> Aluminium Chloride + Hydrogen
Describe a test for hydrogen gas
Apply a burning splint; hydrogen will burn with a squeaky pop
