Matter
What is matter?
Matter is anything that has weight (mass) and takes up space (volume).
What is a chemical change?
When you mix substances together creating a whole new substance.
What is a physical change?
A physical change happens is when matter changes its appearance.
What are atoms?
Small particles, building blocks of matter.
We can touch atoms with our hands.
False
What are the 3 forms of matter?
Solid, Liquid, and Gas
Can a chemical change be reversed? Why?
No, because it's irreversible.
Is a physical change reversible? why or why not?
Yes, because a new substance is not formed.
Can we see atoms with our own eyes? Why or why not?
Atoms are very tiny particles that can't be seen even with the best microscope.
Humans are made up of atoms.
True, 7 billion atoms.
Desk, pencil, computer are all examples of what form of matter?
Solid
Is rust is an examples of a chemical change? Why or why not?
Yes rust is an example of a chemical change because a new substance occurs and the change is irreversible.
Give me 3 examples of a physical change.
A glass breaks on the floor. A can is crushed. A paper is ripped in half
What are the smaller particles inside an atom?
Protons, Neutrons, Electrons.
Looking at solids, liquids, and gases. The particles in solid move the fastest.
False, the particles in gas move the fastest.
Carbon Dioxide is and example of which form of matter?
Gas
During our class experiment, what 2 substances did we mix together? And what did they form?
We mixed baking soda and vinegar. The substances mixed together creating carbon dioxide (bubbles)
How can I tell if something changed physically?
The appearance of the object changes.
What is the center of an atom?
The Nucleus.
Fill in the blank.
Everything around us is made up of ________.
________ is made up of tiny particles called ______.
Matter
Matter , atoms.
What is an example of all 3 forms of matter?
Water
Give me an example of a chemical change
Food being digested.
Fire burning wood.
A metal rusting.
Pretend you have a piece of butter, what is a possible physical change that could take place?
Melting the butter, it's still butter!
What is the charge for protons, neutrons, and electrons?
Protons have a positive charge.
Neutrons have no charge
Electrons have a negative charge.
How many elements are in the periodic table?
There are 118 elements.