Scientific Questions
How does an investigation begin?
With an observation
What is a plan?
It is how you will collect data during the experiment
What are the 3 states of matter?
Liquid, solid and gas
Give 1 example of elements
(any element)
What is an atom?
The smallest part of an element that can exist
What do scientists collect when doing investigations?
Data
What does each graph graphs?
Bar: Categoric data
Pie: Discrete or categoric
Describe the 3 states of matter
Solid: Particles don't move around and vibrate on spot
Liquid: Particles move from place to place, sliding over each other
Gas: Particles spread out
What is an element?
A substance that cannot be broken down into other substances
How many types of atoms are there?
92
What is a variable?
Anything that might affect the outcome of an investigation
What is the risk assessment?
The explanation of how you will reduce the chance of damage to equipment
What is melting and freezing?
Melting: When a substance changes from solid to liquid
Freezing: When a substance changes from liquid to solid
92 that exist naturally, 118 in total
What are the 3 subatomic particles?
Protons, electrons and neutrons
What are the 3 variables? Describe them
Independent: The variable you change
Dependent: The result of changing the independent
Control: The ones you have to keep the same to not affect the result
What is accurate and precise data?
Accurate: Close to the value of what you are trying to measure
Precise: Gives similar results if you repeat the measurement
What is the melting point?
The temperature at which a substance melts
What is the chemical symbol?
A one-or-two letter code for the element
Where are the subatomic particles located at and what is their charge?
Neutrons: Neutral, located in the nucleus
Protons: Positive, located in the nucleus
Electrons: Negative, located outside the nucleus
What are the steps in the scientific method?
Observation, make questions, make a hypothesis, experiment, analyse, and make a conclusion
What are the types of data?
Continuous: Any value
Discrete: Whole number
Categoric: Word
What is boiling and the boiling point?
When liquid becomes gas and the boiling point is the temperature a substance boils at
What does the Periodic Table lists and how are they grouped?
The elements and the ones with similar properties are grouped together
What are the 2 regions of an atom?
The atomic nucleus and the "cloud" of electrons