Ns Flashcards
Define melt
Substance from solid to liquid
Define melting point
A temperature at which a substance changes from solid to liquid
Boil
When a liquid starts to bubble and change into gas
What is an element
A pure substance which cannot be broken down
The rows on a period table are called
Periods
How are the elements represented
Number,symbol,atomic number and position
What is a fair test
A scientific investigation that is carefully controlled
What does a scientist always start with
Question
Define constant
Things we don’t change
Define variables
Things we change
Why do we change one variable at a time
To get an accurate result
4 ways plastic is useful
Strong
Replace ivory/wood
It makes cars lighter
It saves a lot of energy
Give the function for ovaries
Produce and release eggs
Function of anther
Produce pollen grains
Function of stigma
Receives pollen
Solvent?
The liquid which the substance dissolves in
Solute?
The substance that dissolve in the liquid
Solution
The mixture that the substance and liquid have been mixed in
Two types of mixtures
Heterogeneous and homogeneous
Fish have moist skin covered in
Scales
Fish have a skeleton made of bone or of
Cartilage
Fish use for swimming
Fins
To reproduce, fish lay that have no .
Eggs, shells
Fish are which means their body temperature changes with the temperature of the environment
Cold blooded
