Introduction to matter
States of matter
Types of energy
Thermal energy
Periodic table and chemistry
100
Is chicken and rice soup heterogeneous or homogeneous?
Heterogeneous
100
The change in stage from a gas to a liquid.
Condensation
100
Energy that travels in waves
sound energy
100
A material that conducts heat well is called a/an ___________
conductor
100
What is hydrogen's electron dot diagram?
H⏺
200
Is orange juice heterogeneous or homogeneous?
Homogeneous
200
Have no definite shape but a definite volume
Liquids
200
What is energy?
Energy is the ability to do work or cause change.
200
A material that does not conduct heat well is call a/an _______
insulator
200
What is lithium's electron shell diagram
300
Is ice melting a a physical change or a chemical change?
physical change
300
What are the two main types of vaporization?
Boiling and evaporation
300
What is the difference between potential and kinetic energy?
Kinetic energy is the energy of motion. Potential energy is stored energy.
300
Transfer of energy between two objects touching. (Burning hand on stove)
Conduction
300
What are three signs that a chemical reaction has taken place?
Forming a Precipitate
Gas Production
Color Change
400
What is the difference between mass and volume?
Mass is the amount of matter in an object. Volume is the amount of space an object takes up.
400
Give an example of a crystalline solid and an amorphous solid.
Crystalline: sugar, salt, snow
Amorphous: glass, butter, some metals
400
A cat at the top of a 20.0m tree has a mass of 3.0kg. What is its potential energy?
PE = mgh
3kg x 9.8 x 20m = 588 J
400
Transfer of energy through circular heat current. Heat rises and falls (like in the mantle)
Convection
400
What family does iron (Fe) belong to?
Transion metal
500
Is H2O a molecule or compound?
Compound because it is made of 2 kinds of elements
500
Give an example of each: A liquid with a high viscosity and a liquid with a low viscosity.
High: honey
Low: water
500
A 30 kg plane is flying at a constant speed of 15m/s. What is the plane’s kinetic energy?
KE = (0.5 x M) x (V² )
(0.5 x 30kg) x (15²)
=(15) x (225) = 3,375 J
500
At what state of matter do particles have the most kinetic energy? Explain.
In a gas state. Kinetic energy is the energy of motion. Gas particles move the most in a gas state.
500
Label the reactants and products in the chemical equation below
Reactants -------> Products