Chapter 2 Acid And Alkali Flashcards
(23 cards)
What is an indicator
A substance that changes couloir in different liquids
What is a universal indicator
A substance that shows how acidic or alkaline a substance is
Which color is strongly acidic
Ph 1
Red
Which color is weakly acidic
Ph 4
Yellow
Which color is nuetral
Ph 7
Green
Which color is weakly alkaline
Ph 10
Blue
Which color is strongly alkaline
Ph 13
Purple
What is neutralization
the process of acids and alkalis cancelling each other out
Scientists that study rocks are called what
Geologists
What are rocks
Rocks are things that are made out of minerals
Name 3 types of minerals
Mica
Quartz
Feldspar
What is soil made up of
Small particles of minerals rocks humus and dung
What is the difference between rocks and minerals
A rock can be made up of different substances while a mineral is only made up of one
What is humus
Materials that come from living things
How many types of rocks are there and mention them
3
Igneous
Metamorphic
Sedimentary
How is an igneous rock made
When magma cools it solidifies and makes rocks
How is a sedimentary rock made
Layers. Of fragments collection on the sea bed
As more layers build the pressure presses the particles forming a rock
How is a metamorphic Rock formed
When high temperatures squash the grains closer
What is weathering
When rocks are worn away
What is chemical weathering
When acid affects the look of a rock
What is physical weathering
When water inside the cracks freezes and expands
The temprature rises and bits of rock fall of
How many types of wethering are they
3
What is biotic weathering
This is weathering done by living organisms
