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measure humidity
 
hygrometer
 
barometer
Used to measure atmospheric pressure
 
barometer
 
thermometer
Used to measure wind
 
anemometers
 
thermometers
the study of the weather
 
meteorology
 
climatology
how hot it is
 
temperature
 
humidity
the layer of gas around the Earth
 
atmosphere
 
humidity
how far you can see, it depends on the atmospheric conditions or darkness
 
visibility
 
temperature
rain, hail or snow which falls from clouds
 
precipitation
 
humidity
how much water vapour there is in the atmosphere
 
humidity
 
temperature
When a chemical reaction takes place and a product is formed from the reactants, it is often very important that the product is____
 
pure
 
mixed
What are the reactants of the following products: copper chloride + water + carbon dioxide
 
copper carbonate + hydrochloric acid
 
barium chloride + sodium sulfate
What is the product of the reactants: silver nitrate + sodium chloride
 
sodium nitrate + silver chloride
 
sodium sulfate + water
Which scientist’s model suggested that electrons orbit the nucleus in specific energy levels?
 
Niels Bohr
 
J.J. Thompson
 
Ernest Rutherford
 
James Chadwick
In Rutherford's gold foil experiment, most alpha particles passed straight through the foil. What did this observation suggest?
 
Atoms have a lot of empty space.
 
Atoms are densely packed with particles.
 
Atoms have a lot of empty space.
 
Electrons are in fixed orbits.
Which particle has a positive charge?
 
Proton
 
Neutron
 
Electron
 
None of the above
Which statement is true about the mass of subatomic particles?
 
Electrons have less mass than protons.
 
Electrons have more mass than protons.
 
Neutrons have less mass than electrons.
 
Protons have less mass than electrons.
What was the primary conclusion of Rutherford's gold foil experiment?
 
atom is mostly empty space with a dense + charged nucleus
 
Electrons are scattered randomly in a positive sphere
 
Atoms are indivisible particles.
 
The mass of an atom is evenly distributed.
In which atomic model are electrons embedded within a positively charged "pudding"?
 
Thompson's model
 
Bohr's model
 
Rutherford's model
 
Modern quantum model
Who proposed the atomic model with a nucleus and electrons surrounding it?
 
Ernest Rutherford
 
J.J. Thompson
 
Niels Bohr
 
James Chadwick
Which of these particles has no electrical charge?
 
neutron
 
proton
 
electron
 
none of the above
What charge does an electron have?
 
Negative
 
positive
 
Neutral
 
none of the above
Which of the following particles is found in the nucleus of an atom?
 
proton and neutron
 
Neutron
 
Electron
 
proton
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