UNIT
Astronomy: The Stars
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LESSON 5
Star Evolution
OURSE
UTUNE
Based on the image, what determines the path a star will take in its life cycle?
Select the one correct answer.
not to scale
the star's mass
OURSE
COOLS
grody
the stor's color
cools
wie dwar
Cege Stor
Fedom
plantas de
the stor's age
the stor's temperature
ESSENT
monsi
.
andals
b
massive stor
red superont
Supernova
blodshole
ESEC
Select the picture to enlarge
Mark
Substance x has a fixed volume, and the attraction between its particles is strong .substance y had widely spread out particles and can be compressed what can most likely be concluded about these substances
Reacting masses1 calcium carbonate breaks down on heating to produce calcium oxide and carbondioxide gas. caco3 + cao + co2a student heats 15 g of calcium carbonate strongly in a crucible. relative atomic masses (a): ca = 40, c = 12, o = 16.calculate the mass of calcium oxide produced by this reaction.(5 marks)