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DefinitionsP (part 2)
Click for each heading
then for the answer
Physics =
phun
Phototropism
Growth response of a plant to light
• Plant gets more light
• More photosynthesis happens
• More food for plant
• Grows bigger faster
Physical Change• No new substance is made
• Usually easy to reverse
• Little or no energy needed
• Ice melting or gas condensing = examples
Physical Digestion
• Food is cut into smaller particles
• by chewing or grinding
• in mouth and stomach.
Periodic Table of Elements
• All elements arranged in order of atomic number – smallest to largest
• Designed by Mendeleev
Periods
Groups
Names of Groups• Group One
• Alkali Metals
• Group Two
• Alkaline Earth Metals
• Group Eight (zero)
Noble Gases
• Group Seven
Halogens
Pitfall trap
• Used to trap small insects, spiders, slugs etc
• Jam jar in ground covered by stone.
Placenta (the afterbirth)
• Allows two-way transfer of substances between mother and child blood
• Blood of child and mother don’t mix together
• Leaves the uterus 15- 20 minutes after the baby is born – “after” “birth”
Plasma
• Liquid part of blood
• 90% water
• 10% dissolved substances
Plastics
• Man made materials made from crude oil
• Do not bio-degrade(rot)
• Pollution problem – so reduce, reuse, recycle
Pollution
• Adding unwanted waste material to the environment
Producer
• Plant that makes own food in Photosynthesis
• Starts off every food chain
Product
• The substance made in a chemical reaction ( e..g. hydrogen when acid and metal react)
• Or made when an enzyme acts on (changes) a substrate• E.g. maltose is product of amylase working on starch
Protein• Food type used for growth and repair• Meat, fish, eggs are high in protein• Test – add biuret solution (Blue) to sample • RESULT
changes from blue to lilac• Conclusion
Protein is present
Puberty
• Time when child gradually becomes sexually mature due to sex hormones
• Approx 10 – 15 years of age
• Do I know it??• Phototropism• Physical change• Physical
digestion• Periodic Table of Elements
• Pitfall Trap• Placenta
•Plasma•Plastic•Pollution•Producer•Product•Protein•Puberty