Complete the following sheets on content you have covered ...
Complete the following sheets on content you have covered this year. B1 REVISION: Cell Structure Bacteria & Yeast Animal & Plant Cells Structure Purpose Plant/Animal/ Both Controls the cells activities Cytoplasm Where is the genetic material in a bacteria cell? How many cells make up yeast? Specialised Cells Cells are specialised to carry out a specific function. The structure gives a clue to its function. Both Mitochondria Microscope Ribosomes A plant cell in a photograph measures 15 mm across. If the actual size of the cell is 0.015 mm, what is the magnification in the photograph?
Protein synthesis takes place Plant Contain chlorophyll, absorb light energy to make food Vacuole How do you turn mm into micrometers? If a cell has many ribosomes it is making a lot of protein, which type of cell might it be? What is an electron microscope? KEY WORDS: Gland cells Nucleus Algal cell Cellulose Chloroplast ASSESSMENT: B1 REVISION: Cell transport Describe active transport: Define diffusion and state where it occurs in the body? Draw a picture to explain how osmosis works: How is it different to diffusion: Describe the how nutrients are absorbed in the gut RP Osmosis Plan a practical do
investigate osmosis. List keywords involved in Osmosis Describe the effects of osmosis in plant cells: How can you increase the amount of diffusion? KEY WORDS : Partially permea ble Osmosis Active transpor t Solute Exchang e surface Ventilat ed Gaseous exchang e Diffusio n B1 REVISION Digestive system Proteins, Catalysts & Enzymes Factors Affecting Enzyme Action. RP - Enzymes Plan an investigation to determine the effect of temperature on amylase digestion.
What are protein molecules made of? Give 3 examples of what proteins can be? What are enzymes and what do they do? The ___________ in a reaction can be held in the active site and either be connected to another molecule or be broken down. Enzymes in Digestion Enzyme Amylase Protease Reaction If the temperature gets too hot the enzyme stops working, the enzyme becomes ________________. Each enzyme works best at a particular _____ value. Speeding up Digestion What acid is produced from glands in the stomach? Which 2 enzymes work in the small intestine? The liver produces _____________ that is stored in the ____________. What does bile do? Lipase KEY WORDS: Denatured Bile Enzymes pH Cell/tissue/organ/organ system
Amylase Organisation Organisation of organisms? C1 REVISION ATOMIC STRUCTURE Draw the symbol for sodium include its atomic mass and atomic number (what do they tell us) What are the charges and masses of electrons, protons and neutrons Define an ion Draw a Fluorine ion Define an isotope Draw the electronic configuration for argon What is a mixture and how do you separate a mixture? Compare the following subatomic particles in these isotope. What happens to the properties? Explain the history of the atom listing all the key Scientists. KEY WORDS: Electron Proton Neutron Shell Electronic Configuration Orbit ASSESSMENT:
C1 REVISION STRUCTURE & BONDING Fill in the gaps: When two elements react together they make a _________ substance called a_________. It is _________ to separate the elements after the reaction. Some atoms react by sharing electrons. We call this _________ bonding. Other atoms react by _________ or _________ electrons. We call this _________ bonding. When atoms react in this way they get the electronic structure of a _________ gas. Use pictures and words to describe each type of bonding: Ionic Fill in this table: Ionic Compound Ratio of ions in compound Sodium chloride Na+ : Cl1:1 Magnesium oxide Formula of compound Covalent MgO Ca2+: Cl1:2 CaCl2 Metallic Fill in this table of more complicated ions: Name of ion Formula of ion
Calcium hydroxide, Ca(OH)2 hydroxide NO3CO32Suphate Example of compound Mg(NO3)2 Sodium carbonate CaSO4 KEY WORDS: Electronic structure Covalent bonding Ionic bonding Proton Electron Ion Giant structure (lattice) Metallic bonding ASSESSMENT: C1 REVISION STRUCTURE & PROPERTIES IONIC COMPOUNDS What type of force holds the ions together? SIMPLE COVALENT MOLECULES Why do metals conduct electricity? How does this affect their melting and boiling point Why can ionic compounds conduct electricity when molten or dissolved in water? Why can metals be bent and shaped?
How strong are the forces between covalent molecules? [intermolecular forces] Draw a giant ionic lattice: Why do ionic compounds have high melting and boiling points? GIANT METALLIC SUBSTANCES How strong are the forces between atoms in a covalent bond? [intramolecular bonds] Draw a structure of metallic bonds Describe the properties and structure of Diamond GIANT COVALENT SUBSTANCES Why is graphite slippery and conduct electricity? KEY WORDS: Giant ionic structures Intermolecular forces Macromolecules Fullerenes Shape memory alloys Polymers Thermosetting / Thermosoftening Nanoscience ASSESSMENT: P1 REVISION Energy transfer by heating Conduction What is a good conductor and why? What is a good insulator and why? Home insulation What is payback time? Loft insulation costs 600.00 including installation. It
saves 80.00 per year on the fuel bill. How long is the payback time? Define thermal conductivity? Specific Heat Capacity Required Practical Outline the practical to identify the SHC of an object Specific Heat Capacity The specific heat capacity of a substance is the amount of energy required to raise the temperature of 1 kilogram of the substance by 1 degree celsius. The equation for specific heat capacity is: E=mxcx What do the symbols stand for and what are the units for each? The specific heat capacity of water is 4200J/kgC. How much energy is needed to raise the temperature of 2kg of water by 1C? P1 REVISION Electric Circuit Label these circuit components: Series Link the component to the correct graph What is resistance? What is the equation for resistance? What is the rule for resistance in a series circuit? What is the rule for resistance in a parallel circuit? Parallel Current Voltage
What is an equation that relates energy, time and potential difference. Describe what happens with LDR and thermistors, what are the symbols? P1 REVISION Radioactivity Give 3 uses of radioactivity, and a brief description of how they work: What is radiation? How did each of these scientists contribute to our understanding of radiation? Henri Becquerel: What causes background radiation? Marie Curie: Ernest Rutherford: Penetrating power Alpha radiation () Explain what half-life is: Beta radiation ( Fill in this table assuming there is a 10% decay every hour: Time from start (hours) 0 1 No. of unstable atoms
1000 900 477 No, of unstable atoms that decay in the next hour 100 90 48 2 3 4 5 6 Gamma radiation ( Deflection by magnetic field Deflection by electric field
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