Properties and Changes
The ability of something to tarnish is....
Chemical Property
Which subatomic particle determines the identity of an atom?
proton
Name the 5 types on kinetic energy
Mechanical, electrical, radiant, thermal, sound.
What two factors determine kinetic energy?
Mass and speed
What are the 2 types of pure substances?
Elements and Compounds
Chemical property
Which subatomic particle determines the reactivity of an atom...
electron
Name the 4 types of potential energy
Chemical, elastic, nuclear, gravitational
What 2 factors determine potential energy?
Mass and height
What are the 2 types of mixtures?
Homogeneous and heterogeneous
Things that are less dense will ______________
rise
Another name for group....
family
What type of energy is found in a battery?
chemical
As potential energy increases, kinetic energy.........
decreases
This type of mixture is uniform in composition (particles are evenly distributed)
homogeneous
A flame burning is an example of ____________.
chemical change
How many groups are there on the periodic table?
18
In all energy transformations, some energy is "lost" in the form of ....
thermal energy/heat
As kinetic energy decreases, potential energy....
increases
mixture
Name 2 pieces of evidence that could indicate a chemical change
1. Something new is produced
2. Energy is released (heat, light, sound, etc.)
3. Change in color
4. Change in odor.
Elements in the same __________ have similar properties.
Group/family
True or false: Energy transformations are efficient
False
Potential and kinetic energy are _____________ proportional.
inversely
A combination in which substances are CHEMICALLY combined.
compound