S2 Module 1 Flashcards
What is the smallest particle of matter
An atom
How many elements on the periodic table
120
How many types of atoms in an element
1
How can elements be made
Natural or man made
What are elements Hg and Bg at room temp
Liquid
What are the columns on a period table called
Groups
What are the rows called on the Periodic Table
Periods
What are elements given to identity themselves
Symbols
Where are the metals on the periodic table
On the left hand side
Where are the non metals on the periodic table
The right hand side
What are metals like
Shiny and electrical conductors
What are non metals like
Dull and non conductors or energy, except for carbon graphite
When are compounds formed
When elements react together
What have different properties from the elements they are made from
Compounds
What are the elements in a compound like
They are chemically bonded together
Are compounds easy to separate
No
What shows you that there is oxygen in a compound
If the compounds name ends in
Or ‘-ite’ or ‘-ate’
Is a new substance formed during physical changes
No
Are physical changes easy to reverse
Yes
Describe physical changes
No new substance is formed, it’s a change of state
An example of sublimation
When dry ice is exposed to air it goes from solid state to gas and is visible as fog
Give an example of evaporation
When a puddle is warmed and evaporated into the air
Give an example of condensation
Glasses fogging up in a warm building on a cold winter day
Give an example of melting
When an ice lolly is left outside on a warm summer day
Give an example of freezing
When water turns to ice
What happens during a chemical reaction
One or more substances are formed
Are chemical reactions easy to reverse
No
How can chemical reactions be identified
In appearance of substance, colour change, gas evolved, precipitate formed
What’s the difference from physical and chemical change
Physical changes are easy to reverse, chemical changes are not
What group contains the alkali metals
Group 1
What group are the halogens
Group 7
What group are the noble gasses
Group 8
Where are the transition metals
Between group 2 and 3
