States of Matter
What are the three states of matter?
solid, liquid, gas
A magnet has a _______ pole and a ______ pole
North, South
A conductor is an object that ...
allows thermal and electrical energy to flow through
A bowl of salad is an example of a ...
mixture
If something is LESS DENSE than water, it will...
FLOAT
What is matter?
anything that has mass and takes up space
What state of matter keeps its own shape and volume?
Solid
Opposite poles = ____________
ATTRACT (pull towards)
An insulator is an object that...
does not allow thermal or electrical energy to flow through
What are some tools that can be used to separate a simple mixture?
magnet, sieve/ strainer, paper filter, tweezers
If something is MORE DENSE (denser) than water, it will...
SINK
What is magnetism?
the physical property of an object if it is ATTRACTED to a magnet
In order to change SOLID ice into liquid water, you have to...
ADD thermal energy/ melt the ice
LIKE (same) poles= __________
Repel (push away)
An example of a conductor is...
iron, steel, copper, nickel, (any metal)
If salt has HIGH solubility, then pepper has _______ solubility
Low solubility (doesn't dissolve)
True or False: Oil will sink in water
FALSE- Oil will always eventually float above water
What is density?
how tightly packed the particles are in an object (whether something sinks or floats)
In order to change water vapor (steam/ gas) back into liquid water, you have to...
REMOVE thermal energy (cool it down/ condense it)
What are four types of metal that are NON-MAGNETIC?
copper, gold, silver, aluminum
An example of an insulator is...
rubber, plastic, wood, paper, cloth, Styrofoam, cardboard, etc. (non-metals)
by evaporating the water- leaving the salt behind
When dumped into a bucket of water, why does a grape sink and a watermelon float?
...because the grape is LESS dense than water/ because the watermelon is MORE dense (denser) than water
What is a mixture?
2 or more different substances mixed together
If you take an ice cube tray with 15 grams of ice cubes outside and the ice cubes melt.. what is the mass of the puddle of water left behind?
15 grams
How would you test of magnetic properties if you were given a bag of random items?
You should run a magnet over the items to see which items are magnetic vs. non-magnetic
Why are electrical wires covered with plastic or rubber?
The plastic/ rubber coverings act as insulators of the electrical energy flowing through the circuit
How would you test for solubility if you were given a bag of random items/ substances (like chalk powder, salt, pepper, Kool-aid power, etc.)?
You should mix the substances in water to see which ones DISSOLVE vs. which ones DO NOT dissolve
If you were given a bag of random objects/ items, how would you test which items are less/ more dense than water?
you would take the items and drop them in water- to see which items float and which ones sink
What is solubility?
how easily something dissolves