-
Proton:
has a positive charge, found in nucleus
-
Neutron:
has no charge, found in nucleus
-
Electron:
has a negative charge, found in orbit around nucleus
-
-
-
mass for electron?
1/1840
-
What is a series circuit?
In series circuit, each component follows the previous one without any breaks
-
if the north poles of two magnets come close what happens?
they repel from each other
-
what happens if a south pole of one magnet comes close to a north pole of another magnet?
they attract to one another
-
What are materials than can be magnetised called?
magnetic materials
-
what do magnetic materials contain at least one of?
Iron,nickel or cobalt
-
how many elements are there according to the last check?
118
-
what group are the alkaline earth metals?
group 2
-
what group are the Halogens?
group 7
-
what group are the Noble gases?
group 8
-
What is the big number on an element?
the mass number, it is the amount of protons+ neutrons in an element
-
what is the small number on an element?
the atomic number, it is the amount of protons or electrons in an element
-
what is the maximum number of electrons in the first shell?
2
-
what is the maximum number of electrons in the second shell?
8
-
what is the maximum number of electrons in the third shell?
8
-
what is the maximum number of electrons in the fourth shell?
18
-
what is a bond between a metal and non metal called?
ionic bond
-
What is an atom called when it gains or loses electrons?
an ion
-
what is a bond between non metal and a non metal called?
covalent bond
-
what is a bond between two metals called?
metallic bonding
-
what are microbes?
Microbes are very small organisms which make up the groups Bacteria, Viruses and Fungi
-
Bacteria:
Bacteria are single celled organisms. They are different from plants and animals because they do not have a nucleus.
-
Viruses:
Viruses are extremely small and cannot be seen on a regular microscope. Viruses cause diseases like Flu,cold,AIDS and chicken pox. They are smaller than a single cell.
-
Fungi:
Fungi ranges from single celled organisms like yeast to large multi cellular organisms like Mushrooms.Fungi likes dark, damp, warm conditions.
-
what is the word equation for respiration?
Gluecose + Oxygen to Carbon dioxide + water + energy
-
what is the word equation for anaerobic respiration IN YEAST?
Glucose to carbon dioxide + ethanol + energy
-
what is the word equation for anaerobic respiration in our muscles?
Glucose to Lactic acid + energy
-
what does lactic acid cause?
cramps in our muscles
-
what two ways can microbes cause diseases?
- Destroy living tissue
- poisoning food
-
How do you kill microbes?
- Heating
- disinfections
- anticeptics
|
|
