C6 Metals and Non-Metals Flashcards
(24 cards)
What word do scientists use to describe characteristics of substances, like their boiling point, strength or hardness
Properties
Give three typical properties of metals
Malleable
Hard
High melting points and boiling points
Give three typical properties of non-metals
Soft, low melting point and boiling point, brittle
What does it mean if a substance is an electrical conductor
Allows electricity to pass through it
What does it mean if a substance is an electrical insulator
Does not allow electricity to pass through it
What do scientists call something that transfers energy from hot to cold quickly
A thermal conductor
What do scientists call something that transfers energy from hot to cold slowly
A thermal insulator
Define malleable
Can be bent without snapping
Define brittle
Does not bend - snaps Instead
Define hard
Difficult to scratch
Define soft
Easy to scratch
Define reactive
Reacts with other substances easily
Define magnetic
Can be attracted to magnets
Define basic
A substance that reacts with acids to form a neutral solution
Are metal oxides acidic or basic
Basic
Are non-metal oxides acidic or basic
Acidic
Why did Mendeleev leave gaps in his periodic table
For undiscovered elements
What name is given to group 1 elements
Alkali metals
Reactivity in group 1as you go down
Increases
Reactivity in group 7 as you go down
Decreases
Name of group 7 elements
Halogens
Name of group 0 elements
Noble gases
Four properties of halogens
Coloured vapours, toxic, low melting/ boiling point, reactive
Word equation for reaction of an alkali with water
Alkali metal + water —> metal hydroxide +hydrogen
