Vocabulary
True or False: Boiling point is when a liquid turns to a gas at a specific temperature
True
True or False: New water is added to Earth every year
False
What is a chemical reaction?
When matter creates new matter
When atoms are spread out and moving quickly they are in what state?
Gas
Matter that cannot be broken down, Oxygen etc.
When an ice cube turns into a puddle on your counter, the cube has gone through what?
A phase change
When liquid water is heated up due to the sun's energy, this process happens
Evaporation
Chemical Reaction or Physical Change: Snow melts on a driveway
When atoms are packed tightly together they are in what state?
Solid
Compound- two elements (Sodium and Chlorine)
Before running, it is common that people will stretch their muscles and "warm up". This "warm up" is an example of...
Thermal Energy
Give three examples of water supply
River, ocean, lake, sea, pond etc.
Chemical Reaction or Physical Change: You get a hair cut
Physical Change
Atoms that are spread out and move slower are at what state?
Liquid
What type of measuring system do scientists use?
Metric System
Explain the difference between a chemical reaction and physical change
Chemical reactions create new matter, physical changes change form, but not its matter
Clouds are formed because of this process
Condensation
Chemical Reaction or Physical Change: Rest forms on a car
Chemical Reaction
States of matter can change due to what?
Change in temperature
What does Chemistry study?
Matter and how it changes
When the temperature increases in a classroom, what has also changed?
Heat Capacity
Precipitation
Chemical Reaction or Physical Change: Salt is added to water
Chemical Reaction
Explain the energy levels of each state of matter
Solid: Lowest energy level, Liquid: Medium energy level, Gas: Highest energy level
Physical properties can be seen (color, size) Chemical properties can be observed (flammability, magnetic)