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What is matter?
What can be used to figure out what a substance is?
Properties
What unit do we measure mass in?
in grams
Finish the sentences: Matter is made up of particles to small....
to be seen
What are the three states of matter?
solid, liquid, gas
If you have a mystery substance, how can you figure out what it is?
You could examine its properties and then compare those properties to properties of know substances.
What is mass?
The measure of the amount of particles in a given type of matter
If we say that the mass is conserved, what does that mean?
Density = mass divided by volume
D = M/V
A new substance has been formed
the ability of a substance to dissolve
A physical change
All of the atoms of an element are _____________.
the same
In what kind of change does one type of matter turn into a whole new type of matter?
A chemical change
If I burn a candle, it will begin to weigh less and less. Where did the "missing" mass go?
It became smoke
What is a molecule?
a small group of atoms formed together with other atoms
Give an example of a physical change
Answers vary
What is an element?
Matter made up of a single type of atom
Give an example of a chemical change.
Answers vary
Give two examples of physical properties
Color, hardness, reflectivity, buoyancy, electrical conductivity, thermal conductivity, magnetism, and solubility
• a gas is formed
• change in color
• change in odor/smell
• change in temperature
• creation of light
If you burn a match, what are two ways that you know that a chemical change has happened?
1. it creates light
2. it creates heat
In which type of change does matter go through a change without becoming a new type of matter?
A physical change
In what type or types of changes is mass conserved?
Physical and chemical changes