Metals, Non Metals and Metalloids
Name 2 properties of non metals
bad conductors
brittle
dull
low melting point and boiling point
most are gases at room temp
3 properties of acids
corrosive
sour
turn blue litmus red
conduct electricity
neutralises bases
reactants go on the __________ of the arrow
left
an endothermic reaction
absorbs heat/energy
fireworks are an example of what type of combustion reaction?
exothermic
Name 3 properties of Metals
good conductors of heat and electricity
lustrous
malleable
ductile
dense
solid at room temp
3 properties of bases
neutralise acids
caustic
conduct electricity
soapy feel
bitter
turn red litmus paper blue
balanced reactions mean what?
that there are the same number of atoms of each element on each side of the equation
exothermic reactions produce
heat, light and or sound
diamonds, graphite and buckyballs are allotropes of what element?
carbon
Has properties of both metals and non metals
What is a metalloid
this measures the concentration of hydrogen ions
What is pH scale
acid + metal reactions produce
a salt and hydrogen gas
photosynthesis is an example of what type of reaction?
endothermic
most household cleaners are this kind of substance
a base
A different form of the same element is called a
what is an allotrope
Name 2 different types of indicators used in the lab to test for pH.
litmus paper
universal indicator
this acid is found in your stomach
hydrochloric acid
complete combustion reactions have unlimited ______, produce a __________ flame.
oxygen
blue
the word equation for a neutralisation reaction
acid + base --> salt + water
Mixtures of metals and other metals or non metals are called _______ and are mixed together because _______________.
Alloy.
stronger and more rust resistant.
What releases hydroxide ions into solutions?
bases
acid + carbonate produces
a salt, water and carbon dioxide
How do you recognize an incomplete combustion reaction?
yellow flame
soot/charcoal
carbon monoxide produced
name 4 metals and 4 non metals
teacher to check answer