science
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- Created by: Sahil01234
- Created on: 24-04-16 14:56
DNA stand for...
deoxyribonucleic acid
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what is adaptation?
the process of change by which an organism or species becomes better suited to its environment. "living in groups is an adaptation to increase the efficiency of hunting"
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What is is the symbol for Sodium?
Na
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The properties of metals include all but which one of the following
Breaks easily
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Which is the chemical property of Carbon dioxide?
Turns lime water milky
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Metal + acid -> Salt + ............. gas
Hydrogen
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What is the function of respiration in living things?
To get energy out of food
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Red supergiants (stars) end their "life" when they collapse and form a:
Supernova
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Redshift and the Doppler Effect support the theory that the universe is contracting
False
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Alfred Wegner proposed which scientific theory?
Continental drift
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A sudden release of strain energy in the Earth's crust resulting in energy waves radiating outwards from the source is called a
Earthquake
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The "Ring of Fire" is located in which region?
The Pacific
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An element is a pure substance made up of only one type of atom
true
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What are the reactants in a neutralisation reaction?
An acid and a base
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The charge of a proton is ________
positive
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The nervous system and which other system work together for co ordination?
Endocrine
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Which answer only contains things from your body's first line of defence?
Hair, skin and mucous
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How many neutrons are in potassium-40?
21
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What is the electron configuration for Sulfur?
(2,8,6)
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What are the coefficients for the following equation when it is balanced? ___SiO2 + ___HF --> ___SiF4 + ___H2O
1, 4, 1, 2
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How is a mixture different from a compound?
Components of a mixture can be separated by physical means
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If a certain mixture is homogeneous, you would properly conclude that the physical properties and the composition are:
Are the same in every small volume element of the sample
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What is the most correct Lewis Diagram for Helium?
He:
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Name this compound: 0=0=n-n-0-0
Dinitrogen tetroxide
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What is the name for the compound CuOH?
Copper(I) hydroxide
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Balance the following: ___BF3 + ___Li2SO3 + ___B2(SO3)3 + ___LiF What will the coefficients be for the balanced reaction?
2, 3, 1, 6
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Other cards in this set
Card 2
Front
what is adaptation?
Back
the process of change by which an organism or species becomes better suited to its environment. "living in groups is an adaptation to increase the efficiency of hunting"
Card 3
Front
What is is the symbol for Sodium?
Back
Card 4
Front
The properties of metals include all but which one of the following
Back
Card 5
Front
Which is the chemical property of Carbon dioxide?
Back
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