Compounds, elements, and mixtures
Scientific method
Forces
Magic triangles
Energy transitions
100
What is 2Ca + 4O -> 2CaO balanced
4Ca + 4O -> 4CaO
100
What is a hypothesis?
A hypothesis is an educated guess about what you think will happen after an experiment is conducted.
100
What is net force?
Sum of all angles enacting on an object.
100
What is the distance Amir runs for a delivery if Amir runs 20 m/s for 1 minute?
1200 m.
100
What is the energy transition of eating food then running?
Chemical -> to mechanical.
200
What is exothermic?
loses energy as it expels heat (downwards slope).
200
What is a constant variable?
A constant is a variable that never changes during an experiment.
200
What is balanced force?
forces equal in magnitude pushing or pulling in opposite directions.
200
What is the amount of force James has applied total to his lawn mower if he has gone 20 meters and has done 155 J of work?
7.75 N.
200
What is candle burning energy transformation?
Chemical -> thermal & light.
300
What is a compound?
2+ elements chemically combined.
300
What is an independent variable?
An independent variable is the one thing you change in an experiment.
300
What is velocity?
Velocity is the rate at which an object can move or operate in a given direction.
300
What is the amount of power Jamie used to push her dresser if 220 work was input for 10 seconds?
22 W.
300
What is the energy transformation of glow sticks?
Chemical -> light.
400
What is a mixture?
A mixture is 2+ elements or compounds physically combined.
400
What is a dependent variable?
The dependent variable is the results of the change you made in an experiment.
400
What is friction?
Friction is the force that slows down an object in motion.
400
What is the acceleration of caleb's car when using 220N of force when having a mass of 1680 kilograms?
0.131.
400
What is the energy transformation for a TV?
Electrical -> light & sound.
500
What is organic compound?
Compounds with a carbon atom.
500
What is observation?
Observation is something you partake through your 5 senses.
500
What is negative acceleration?
the rate at which a moving objects velocity decreases.
500
What is the acceleration of a rocket when the time was 20 seconds the initial velocity is 10 m/s east and the final velocity is West 20 m/s?
-0.5
500
What is the energy transition of a handheld gaming device?
Chemical -> electrical -> light & sound.