Atomic Structure
What do you find in the nucleus of an atom?
Protons and Neutrons
What is the name of the line that goes perpendicular to the mirror?
The normal
Name 3 food groups
Protein, Carbohydrates, Lipids/Fats, Vitamins, Minerals, Fibre
Name an organelle you only find in a plant cell
Chloroplast, Vacuole, Cell Wall
What is a compound
When 2 or more different types of element are chemically combined
What is the charge of an electron?
Negative
What happens when light hits a red object?
All colours of light are absorbed apart from red light wave which is reflected
What part of the digestive system is where nutrients are absorbed into the blood?
What do you find inside chloroplasts?
Chlorophyll
Which of these are compounds (you can name more than one)?
H2O
O2
H2SO4
H2O and H2SO4
How do you calculate the number of neutrons?
Mass Number - Proton Number
What is the law of reflection?
The angle of incidence is always the same as the angle of reflection
How would you test for the presence of starch and what would be the positive result?
Add iodine, it would go from orange to blue/black
How does water get to the leaf for photosynthesis
It comes in through the roots and up the Xylem
How many different elements are there in KNO3
3
How many electrons fit in the first and second shell?
2 and 8
What happens to a ray of light when it goes from a less dense medium to a more dense medium.
The ray of light bends towards the normal
Why do you have hydrochloric acid in your stomach?
To kill bacteria that is on your food
How does CO2 get into the leaf
Through the Stomata
Name the three elements joined together in copper carbonate
Copper, Carbon, Oxygen
What is the definition of an element?
A substance that contains only one type of atom
What is the definition of a transverse wave?
When the vibrations/oscillations are perpendicular to the direction of the wave
What is an enzyme and what does it do?
It is a biological catalyst that breaks down food molecules into smaller ones
What is the word equation for photosynthesis
Water + CO2 --> Glucose + O2
What is the chemical formula for a substance with x1 Sodium, x1 Hydrogen, x1 Carbon, x3 Oxygen
NaHCO3