Properties of Metals and Non-Metals
What are two physical properties of metals?
Shiny, good conductors of heat and electricity
Write the word equation for: magnesium + oxygen → ?
Magnesium + oxygen → Magnesium oxide.
No.
What happens to the reactivity of Group 1 elements as you go down the group?
Their reactivity increases.
Why are non-metals used as insulators in electrical wires?
Non-metals are poor conductors of electricity.
What are the products when a metal reacts with an acid?
Salt and hydrogen gas
Which metal is the most reactive: Potassium, Lithium, Zinc?
Potassium
Which Group 7 element can displace bromine from potassium bromide solution?
Chlorine.
Give two differences between metals and non-metals.
Metals are shiny, malleable, and good conductors; Non-metals are dull, brittle, and poor conductors.
What would you observe if add potassium in water?
Violent reaction including:
fizzing and bubbling, flame, heat
Place these metals in order of reactivity (most to least): zinc, copper, magnesium.
Magnesium, zinc, copper.
Group 0 elements react with:
unreactive
Explain why metals are used in cooking pans and non-metals in pan handles.
Metals are good conductors of heat, while non-metals are insulators, so they don't get hot.
Explain the difference in reaction speed between potassium and copper with water.
Potassium reacts quickly and violently with water; copper does not react with water.
Why is the reactivity series useful in predicting chemical reactions?
It helps predict which metals will react with substances like water, acid, and oxygen.
What are the other names for Group 1, Group 7 and Group 0 elements?
Group 1 - Alkali metals
Group 7 - Halogens
Group 0 - Noble gases