Properties
Amount of mass per unit of volume
noun: density
adjective: dense
mass is measured in
kg or grams
Helium has 2 protons and 2 neutrons. What is the atomic mass of helium?
4 amu
What are the three states of matter?
solid, liquid, gas
A comment always begins with
#
a property that cannot be assigned a numerical value (eg. colour)
qualitative property
Give three examples of quantitative properties
mass, volume, density, temperature, boiling point, melting point
What type of elements are shiny, highly conductive, flexible
metals
Does cork float or sink?
Floats!
a function always starts with
def
adjective: conductive
How is density calculated?
mass divided by volume
What type of elements have properties of both metals and nonmetals?
metalloids
solids - fixed volume, fixed shape
liquid - fixed volume, takes the shape of its container
gases - takes the volume and shape of its container (neither are fixed)
when writing if statements, functions, and while loops, it is important to remember ________
indentation (or 4 spaces)
- make sure the code underneath the while statements is inline/indented/has four spaces
How easily a substance is drawn into a wire
noun: ductility
adjective: ductile
How can you test how brittle a substance is
by breaking (or trying to break) it
What is an element?
a material that can't be broken down into anything smaller
How do particles behave in a liquid, solid and gas?
solid - particles vibrate in place
liquid - particles slide past one another
gas - particles move freely
Where do we put arguments?
Inside functions
Ability of a substance to degrade another object
noun: corrosivity
adjective: corrosive
How do you calculate volume?
for a rectangular shape:
volume = length x width x height
for an irregular shape, you can measure the displacement of water
The following chemical symbols are which elements:
Si, Cl, He, Na
silicon, chlorine, helium, sodium
A form of matter that will turn into a solid when pressure is exerted on it, and will turn into a liquid when little or no pressure is exerted on it.
Non-Newtonian Fluid
What is a function?
Code that defines a set of actions that can be reused/repeated elsewhere by just calling the function name.