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Core Science Year 10

Upwey High School 2012

QuestionAnswer
What is the law of conservation of energy? Energy cannot be created or destroyed. It changes from within a system.
What is kinetic energy? Refers to motion.
What is potential energy? Usually refers to height.
What is DNA? DNA is wound into chromosomes and is inherited material.
What are genes? Genes are segments or lengths of DNA.
What is an allele? An allele is an either a dominant or recessive trait inherited from our parents.For example, eye colour.
Dominant verses Recessive? Dominant- You only need one allele. Recessive- You need both alleles.
Homozygous verses Heterozygous? Homozygous- Same allele. Heterozygous- Different alleles.
Mitosis verses Meiosis? Mitosis- the multiplying/spiting of non-sex cells. Meiosis- the splitting/ multiplying of sex-related cells.
What is an atomic number? The number on the periodic table and the number of protons.
What is a mass number? The number of protons + neutrons.
Electron configuration? 2, 8, 8, 2. 3rd shell can hold 10 more.
What are groups? Which way? Groups are the number of electrons in the outer shell, and they go vertically.
What are periods? Which way? Periods are the amount of occupied shells. They are horizontal.
What is an ion? An ion loses or gains to form a full outer shell.
Why are compounds made? What are they? Compounds are made so that each atom is neutral. For example, Mg2+ + 2Cl- = MgCl2
How do you balance an equation? 1. Make shopping list 2. Work out how much more is needed. 3. Order correctly (numbers in front with brackets.)
Created by: TAY0019
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