Our genetic code, genotype, phenotype and alleles: homework
Complete the questions in your book as far as page 61. Do the question below.
Reactions of acids, balanced equations and a connection to the space shuttle
We have studied the reactions of acids with:
- bases
- metals
- and today carbonates
We have used word equations to produce fully balanced chemical equations in three steps. For a little more information on this process have a look at this post about the space shuttle being blasted into orbit on the back of a huge pop test.
the basic word equations we use are:
acid + base —–> salt + water
acid + metal —–> salt + hydrogen
Acid + carbonate —–> salt + carbon dioxide + water
Use these word equations to answer the questions below.
Sexual reproduction and meiosis
Read over the relevant pages in your workbook and attempt these questions.
Year 10, writing fully balanced chemical equations homework
Year 10, writing fully balanced chemical equations homework
A whole lot of the chemistry you have studied this year comes together in this exercise.
- ions and how they are formed.
- naming ionic compounds and writing their formula
- word equations.
…….. and finally the last piece in the jigsaw writing a fully balanced chemical equation.
If you study NCEA chemistry at level 1 next year a rough guide is
Achievement: writing word equations.
Merit: Inserting chemical formulae into an equation.
Excellence: producing a fully balanced chemical equation.
Revise what we did today by watching the video then do the short exercise. In your notebook write down the word equation and complete it (achievement) Underneath the word equation insert the chemical formula of each substance (merit). Finally balance the equation (excellence) NOTE this usually involves sticking 2 in front of something
1 sodium hydroxide + sulphuric acid ——->
2 copper oxide + hydrochloric acid ——–>
Variation and survival of a population homework exercise
Here is a list of key words associated with variation that you should be familiar with
meiosis, crossing over, independent assortment, inheritable variations, non inheritable variations, aseexualnreproduction, cloning, phenotype, mutation. sexual reproduction.
Use a selection of these words and relevant examples to discuss the importance of variation to the long term survival of a population.
Your answer should include
- The meaning of the term variation
- What causes variation within a population
- The advantages and disadvantages of variation within a population
You should have read pages 46 and 47 in your workbook carefully and completed the exercises on pages 48 and 49 before you attempt this.
Once you have drafted an answer type it into the question below and submit for feedback. You need to spend at least an hour doing this work.