Matter
What is volume? (we don't mean how loud something is)
the amount of space taken up by matter
Name the four states of matter we studied this year.
solids
liquids
gases
plasmas
What is the name for the center of the atom?
nucleus
Opposite charges _______.
attract
Are mixtures physically or chemically combined?
physically
Identify the state of matter that has a definite volume but does not have a definite shape.
liquid
What small particle is part of the atom but IS NOT found in the center of the atom?
electron
Which type of charging requires rubbing?
friction
Give an example of a homogeneous mixture.
sweet tea, orange juice, milk
etc.
Name one of the two things that affect how much KE something has.
mass
velocity (or speed)
What is the name for all the atoms that have the same number of protons?
(Example: every atom that has 4 protons is the same ____.)
element
There are three ways to make an electromagnet stronger. Name one of them.
more wire turns
thicker iron core
more electric current (more batteries)
What is the BEST sign that a chemical change has happened?
a new substance is made
OR
chemical bonds are made or broken
You throw a ball up in the air and catch it. When does the ball have the greatest amount of gravitational PE?
at the top, right before it starts to fall back down
Elements in the same ______ have similar properties.
group
Describe the energy transformation that happens in an electric motor.
electrical energy turns into KE
OR
electrical energy turns into ME
A boat is floating on the water. Suddenly, it springs a leak. Using the word DENSITY in your answer, explain why the boat sinks.
The boat becomes denser than the water, so it sinks.
You hold a ball up and let it fall. Where does the ball's gravitational PE go as the ball falls?
It transforms into KE.
What is the name for the attraction between one atom's protons and another atom's electrons that forms compounds? (What makes the two H's "stuck" to the O in a water molecule?)
chemical bond
Describe the energy transformation that happens in an electric generator.
KE turns into electrical energy
OR
ME turns into electrical energy