All science Flashcards
Particles are packed tightly together so they are unable to move around
Very low kinetic
Electrons of each atom are in motion= small vibration
Solids
More kinetic energy than a solid
Force is speed evenly through it
They are close but have a small amount of space
Liquid
Particles have lots of space
High kinetic energy
If unconfined the particle of it will spread out indefinitely
Gases
Highly charged particles
Extremely high kinetic energy
Plasma
Iron and steel ____when they come into contact with water and oxygen
Both water and oxygen are needed for this to happen
Rusting
The variable you change??
Independent variable
The variable you measure??
Dependant variable
The variable you keep the same??
The control variable
Example:
Mag+CopperSulphate
—>
Magnesium Sulphate+Copper
- In this a more reactive metal displaces a less reactive metal
- The metal in a compound is replaced with a more reactive metal to form a new compound
Displacement reaction
An _____ is a measure of two elements, one of which is a metal
>______ often have properties that are different to the metals they contain
>This makes them more useful than the lure metals alone
>______ are often harder than the metal they contain
Alloy
> usually shown as a diagram
sequence of feeding relationships between organisms,showing which organisms eat what and the movement of energy through tropic levels
Food chain
>Carbohydrates-Provide energy >Lipids-Provide energy >Proteins- Growth and repair >Vitamins/Minerals-keep you healthy >Water- cells and body fluids >Fibre-provides bulk too good to keep it moving through the gut
Nutrients
Kinetic theory uses the arrangement and movement of particles to explain solids liquids and gases
Kinetic theory
The nucleus contains protons and neutrons and is surrounded by electrons in energy levels (shells)
Atom
Why do different people need different amounts of nutrients in their diet
Due too Health body types age and any illnesses
