1. CHEMISTRY UNIT

2. Chemistry Study Guide Lesson 1: Matter (pgs. 522-523)
_________________ is anything that has mass and takes up space.
How do you calculate the volume of a solid?
What are two properties of all matter?
Does the gas inside a balloon have mass? Why?

3. Chemistry Study Guide Lesson 1: Atoms & Molecules (pgs. 524-525)
All matter is made of tiny particles called ____________.
____________ is made up of two or more atoms joined together.
CO2 is made up of ____ atom of carbon and ____ atoms of oxygen.
What are four examples of things made with carbon?
Protons have a ___________ charge, neutrons have a ___________ charge, and ____________ have a negative charge.
______________ and ____________ have the same numbers in atoms.
What makes a carbon atom carbon and not something else?
What is an atom and what are its parts?

4. Chemistry Study Guide Lesson 1: Elements (pgs. 526-527)
Matter that’s made of only one kind of atom is an ___________.
Why isn’t water an element?
Some of the symbols in the Periodic Table came from _______ or _______ words. Give two examples.
Elements are arranged in order by the number of __________.
An element’s number of protons is called its __________________.
Elements on the left side of the Periodic Table are ___________. Give 3 examples.
Elements on the far right side of the Periodic Table are _____________. Give 3 examples.
How are elements arranged in the Periodic Table?

5. Chemistry Study Guide Lesson 1: Solids, Liquids, & Gases (pgs. 528)
What are the 3 states of matter and an example of each?
In a __________, particles are packed closely together and ____________ in place.
In a __________, particles can change shape and flow.
In a __________, particles are far apart and move rapidly.

6. Chemistry Study Guide Lesson 2: (pgs. 534-537)
If heated, at what degrees does ice melt? _______ It changes from a ___________ to a ____________.
If heated, at what degrees does water boil? __________ It changes from a ___________ to a ______________.
Can aluminum melt? _____ Look at the table on page 536, at what temperature? _______
Melting points are always __________ than ____________ boiling points.
______________ is the measure of how closely packed an object’s atoms are. To find density, divide the mass by the volume of an substance. The relationship of mass to its volume is density.
Most substances have densities that don’t change. A copper penny and a copper kettle have different masses, but the same _________________.

7. Chemistry Study Guide Lesson 2 continued: (pgs. 538-540)
A ______________ is a combination of two or more substances that aren’t permanently combined and their properties don’t change. An example of this is _________________.
A mixture in which all parts are mixed evenly is called a ____________, which can be combinations of _____________, _____________, and ________________. An example of this is _________________.
Examples of physical changes that we see everyday are: _________________________________________________________________________.
Physical changes affect the form of a substance but do not change the ________________ makeup of the substance.

8. Chemistry Study Guide Lesson 3: (pgs. 546-548)
How easily and quickly a substance burns it is _________________.
The ability of a substance to go through a chemical change is it _________________.
Examples of chemical changes are:
If you __________ a marshmallow
When iron combines with oxygen in the air _________ forms. This is corrosion.
________________ form when peroxide reacts with blood and releases oxygen gas.
Fireworks are a good example of when a ________________________ might tell you that a chemical change has occurred.
What is the law of conservation?

9. Element Superhero or Super villain
You may choose from ANY element
Name your character.
Give your character a superpower.
Come up with a costume for
your character.

10. Atom – the smallest unit of an element.
No two elements’ atoms look the same. That is why each element is different.
Brain Pop Atomic Model 4:09

11. All about Atoms
Atoms are constantly in motion.
Electrons move around the nucleus in paths called shells (or energy levels).
Shell – an energy level containing spinning electrons that surrounds the nucleus of an atom

12. Composition of an Atom Atoms have 5 basic parts:
Protons – positively charged particles in the nucleus of an atom
Neutrons – neutral particles in the nucleus of an atom.
Nucleus - center part of an atom consisting of protons and neutrons
Electrons – negatively charged particles that spin around the nucleus
Shells – outer layers of an atom

13. What matters? Mass & density!
Matter – anything that has mass and takes up space
Mass – the amount of matter in an object
Density – the measure of how closely packed an object’s atoms are
a copper penny & a copper kettle have different masses but the same density! WOW!

14. Element – a pure substance that cannot be broken down into simpler substances
Compound – a molecule made of 2 or more different elements.
Compounds and molecules can be made when 2 or more ions bond together (covalent or ionic bonds).

15. Three little molecules which one is an element?

16. Covalent bond ionic bond Brain Pop Chemical Bonds Video 4:47
when two elements share electrons when combining
usually non-metals
ionic bond
when two elements lose or gain electrons when combining
usually metals
Brain Pop Chemical Bonds Video 4:47

17. Periodic table of the elements
Brain Pop Periodic Table of the elements 4:41

18. Metals and non-metals
Metal – a type of element that is a good conductor of heat and electricity
Mostly shiny solids
Metals make up 2/3 of all elements
Find aluminum & tin ON THE PERIODIC TABLE- where are they located?
Non-metal – an element that is typically a poor conductor of heat and electricity
½ of non-metals are gases
Find carbon & oxygen on the periodic table-where are they located?

19. Properties of Metals
Shiny
Ductile – capable of being drawn out into wire or thread.
Malleable – capable of being extended or shaped by physical pressure (flattened).
Conductive – having the ability to convey or transmit heat or electricity.

20. Examples of molecules Water (H2O) - made of hydrogen and oxygen
Carbon dioxide (CO2) - made of carbon & oxygen
Salt (NaCl) - made of sodium and chlorine

21. Facts from the Periodic Table
Symbol – the alphabetical letter or letters used to represent an element and/or compound.
Atomic number – the number of protons in the nucleus of an atom; determines the chemical properties of an element.
Atomic weight – usually twice the atomic number
There is a pattern occurring in the table…what is it?

22. Looking at formulas Water H2O Salt NaCl Carbon dioxide CO2
A Chemical Formula is the way we represent compounds or molecules. It is made by combining the symbols of the elements from which the molecule or compound is made. NaCl CO2 C6H12O6 H2O2
Hydrogen peroxide H2O2
Ammonia NH3 (windex)
Water H2O
Carbon dioxide CO2
Brain Pop chemical equations video 3:21

23. States of Matter
Atoms/molecules can change state/phases due to temperature or pressure change.

24. Noble gases
elements which do not react with other elements or “inert” gases
they are “non reactive”
neither ionic or covalent
Don’t form compounds easily

25. Physical vs. chemical changes
Physical Change
No new substance is created
Chemical change (reaction)
A new substance is created.
grinding salt
breaking glass
cutting wood or paper
dissolving sugar in tea
water freezing
water evaporating
Rocks crushed
Recycling!
Cheese sliced, melted, or shredded
hydrogen & oxygen gases combining to form water
Iron rusting-mass is changed!
Wood burning
Cake baking
Milk souring
Fireworks
Apple browning
Bill Nye Chemical Reaction Video

26. 5 ways to tell if a chemical change is happening:
Changes color – apple turns brown due to a chemical reaction with the air
Energy gets absorbed or released – fireworks make light, heat, and sound when they burn
Changes odor – food smells bad when it spoils because of chemical changes
Produces gases or solids – antacid tablet into water it creates bubbles
Not easy to undo – after baking a cake it would be very difficult to separate out its ingredients because they’ve undergone chemical changes

27. These are all physical changes!
Its all mixed up!
These are all physical changes!
Match the pictures to the right!
Mixture: a combination of two or more different substances
Aren’t permanently combined, can be separated again
Tossed salad, sand in water
Solution: a mixture in which all the parts are mixed evenly
atoms of a solid separate and become invisible in a liquid
Drink mix in water, scuba divers tank
Suspension: a mixture of a liquid and a solid in which the solid does not dissolve
milk cream

28. Bartholomew and the oobleck!