Measuring Temperature
What is the definition of temperature?
How hot or cold something is
- How much energy that the particles have
True or False: According to the particle model, there is empty space between all particles
True
What is the term for a liquid changing into a gas?
Evaporation
What is the scientific term for an object increasing in volume as it gets warmer?
Expansion
What is the term for energy that is stored?
Potential Energy
On the Celsius scale, at what temperature does water freeze? What temperature does water boil?
0 degrees Celsius for freezing
100 degrees Celsius for boiling
In which state of matter does the state NOT take shape of its container, and more a pile?
What is the term for a solid turning into a gas?
Sublimation
What is the term for a substance decreasing in volume as it cools?
Contraction
What kind of energy is stored in the bonds of food and fossil fuels?
Chemical energy
What is the coldest temperature?
Absolute Zero!
-273.15 or 0K
In which state of matter are the particles the MOST spread out?
A gas
Evaporative cooling! - High energy particles escape, leaving cooler ones behind.
Why does a substance expand as it is heated?
Particles move faster and the spaces between them increase
Most of the energy "lost" in a machine like a car engine, or a lightbulb is released as:
Thermal energy! ( Heat)
Which scale starts at absolute zero ?
Kelvin
Which state of matter has no definite shape and no definite volume?
Gas
As a substance changes from a liquid to a solid, do the particles become more or less organized?
More organized ( less movement as the liquid cools down!)
Which state of matter shows the smallest change in volume when warmed?
Solids
A blender turns what kind of energy into what kind of energy?
Electrical energy into mechanical energy ( moving!)
This device uses two different metals twisted together to send an electric current when heated
A thermocouple
For DOUBLE the points
List all five parts of the Particle Model of Matter
SPAMS
S- Same
P- Particles
A - Attracted
M- Moving
S- Space
What is the amount of thermal energy needed to warm 1 gram of a substance by 1 degree celsius?
SPECIFIC Heat Capacity
(Heat capacity does not include the 1 gram)
Why do concrete sidewalks laid with grooves or gaps between the sections?
To allow room for the concrete to expand in the summer without cracking
Which gas, produced by burning coal and oil, is the main contributor to global warming?
Carbon Dioxide!