Science exam S1 y8 Flashcards
Chemists use symbols to identify each element. They use…
1-2 letters to show the symbol
What element is the symbol of K
Potassium
Chloroplasts are found in
plants above the ground
cells are the building blocks of….
Plants and animals
The law of energy
cannot be created or destroyed
non metals have…
-low = lustre
-no = electrical conductivity
-low = density
-low boiling point
Metalloids have…
- moderately high = lustre
- low = electrical conductivity
- medium = density
- very high = boiling point
Metals have…
- high = lustre
- high = electrical conductivity
-high = density - high = boiling point
Atomic number is the same as..
The elections and protons
Cell membrane helps to…
protect the cell
Cell wall
Provides support
Cytoplasm
keeps organelles together
Vacuole
stores water
Nucleus
provides instructions
Chloroplast
produces energy
Mitochondria
Provides energy
The law of conservation energy is…
Energy can not be destroyed or created
Heat is…
being hot
temperature is…
the intensity of heat in a substance
conduction is…
When the heat of the object transferes through to another objects through contact
convention is…
the process of tranferring heat through air or liquid currents
radiation is…
the flow of heat between objects that are not in contact with each other
Energy is…
The ability to do work or cause change
Kinetic energy is..
Moving energy
light energy is
Anything with light
Sound energy is…
Anything that gives of noise
Gravitational potential energy is….
Anything above the ground
Elastic energy is….
Anything stretched
Chemical energy is…
Anything with stored energy
Independent variable is…
The one changed
Dependant variable is…
The thing your testing
Controlled variables…..
The things your keeping the same
H is..
hydrogen
Li is..
lithium
He is…
helium
Be is….
Beryllium
B is…
Boron
C is…
Carbon
N is…
nitrogen
O is…..
oxygen
F is…
fluorine
Ne is…
Neon
Na is…
sodium
Mg is…
magnesium
Al is….
aluminium
Si is…
silicon
P is….
phosphorus
S is…
sulfur
Cl is…
Chlorine
Ar is…..
Argon
K is…
potassium
Ca is…
Calcium
How do you work out the number of neutrons
Subtract the atomic number from the atomic mass
Mass - Number
( round up and down the decimal points )
A generalized cell is….
basic cell strucures
A specialized cell includes….
A unique structure that allows it to carry through the body
Lustre meaning
A glow on rock
Melting point
A point where the metals change from solid - liquids
Boiling point
Where liquids become a vapor or gas
Electrical conductivity
how easily it allows electric current to flow though
Heat conductivity
The ability to conduct heat through it
Malleability
How easiy it can become formed into thin sheets of object
How is the periodic table organized
In order of increasing the atomic number
What does the eyepices lens do
magnifies the object
What does the iris diaphragm do
adjust brightness
What does the the light source do
Allows to see
What is the stage on a micro
platform to do procedure on
What does the coarse focus knob do
Sharpens the focus
What does the fine focus knob do
shines light through specimen
Name an animal specifed cell and the function
-red blood cell ( carries oxygen )
-muscle cell ( help movement )
-nerve cell ( Receives and sends messages through the body)
How are igneous rocks formed
Through cooling of the magma / lava
how are sedimentary rocks formed
through sediments under pressure
how are metimorfic rocks formed
heat and pressure of sedimentary rocks
How are sediments formed
Small rocks broken off during weathering and erosion
What’s weathering
the breaking down or dissolving of rocks / minerals on the surface
what’s erosion
the process in which minerals are worn away
How do you work out the atomic number
the atomic number is just the order number
