Scientific question
What is a variable?
independent variacle
dependent variable
control variable
How does the substance is composed?
just ONE substance
Atoms are the _______ part of element
smallest
Materials are mede up tiny....
particles
Name of the situation when atoms are rearranged to create new substances
chemical reaction
If my data is "blue", wich type of data I have?
categoric
Changes of state
evaporation
condensation
sublimation
How many elements are in the periodic table?
92 elements
What factors affect the diffusion speed?
-temperature
-particles size
-the state of the duffusing substance
Fossil fuels are renewable?
No
Fisrt step of an investigation
observation
Wich are the states of matter?
Solid, liquid and gas
A __________ is a substance made up atoms of two or more elements
compound
Why fossil fuels are non-renewable ?
Because they cannot be replaced once they have been used
What is the boiling point?
when enough energy is transfered to the particles
For what the risk assessment is use for?
It helps to reduce the chamge of demand
Wich state of matter can flow?
liquid and gas
All atoms are the same?
No
Burning is also called...
combustion
The random moving and mixing of particles are called...
diffusion
What are the names of the graphs in wich we can record data?
line graph
bar chart
pie chart
Sublimtion is when a gas change to solid?
False
A ________ molecule is a group of two or more atoms strongly joined together.
molecules
If a data is similar is _______
repeteable
If my data is 100 is a _________ data
discrete