Term 1 Flashcards
What are saftey features of a laboratory ?
Exits
Emergency shut off buttons
Fire blanket
Fire extinguisher
Eye wash station
Broken glass
What is qualitive data?
Qualitative –quality (standard) of something. Eg. colours, names of things (rock names, animals, plants), types of words in a sentence.
What is quantitive data?
Quantitative –quantity (amount or number) of something. Eg. Height (cm), shoe size (mins), temperature of a day (∙C)
What is primary data ?
Data that you or your group collect using your own experiments
What is secondary data
Data that comes form the work of other people.
Eg information you find on the internet, textbooks, etc
What is instrument error ?
if the instrument you are using does not measure correctly
Identify the types of parralax error
Parralax reading instrument human
What is an Atom ?
Are what make up all matter
Their name means ‘indivisible’ that is they are the smallest unit something can be broken down into (well as far as we are concerned anyway) – it can’t be divide further
Atoms come in different types
They contain 3 subatomic particles – protons, neutrons and electrons
What is a proton ?
Positively charged particles inside the nucleus. The number of Protons an atom has determines which element it is.
What is a neutron ?
Neutrally charged particles inside the nucleus
What is an electron ?
Negatively charged particles that surround the nucleus. There is the same number of electrons as protons in an element. Electrons are extremely tiny, we think of them having basically no mass
What is an element ?
Elements are the different types of atoms that exist
What is a molecule ?
A molecule is a single group of 2 or more atoms bonded (chemical word for ‘stuck together’) together – molecules are what make up most of all matter
What is a compound ?
Most molecules are compounds – this means they are made up of atoms of more than one element
Where are atoms electrons and protons and neutrons found ?
Protons and Neutrons In the nucleus
Where as electrons surround the nucleus
