1. Topic: Chemistry
Aim: Describe the structure of an atom.
Do Now:
1. Take out your Atoms reading notes.
2. Length #3 ISA and Volume #1 ISA
HW: Length and Volume Review Sheet (both sides)
Length and Volume Exam on Tuesday
Morning Review for exam on Tuesday morning at 7:20am (ROOM 326)

2. LENGTH # 3 ISA
70.7cm
707mm

3. VOLUME #1 ISA
13mL

4. Matter
Anything that has MASS and takes up space (VOLUME)

6. 1. Identify the building blocks of matter.
Atoms

7. Meaning of the term ATOM
Around 2,500 years ago, the ancient Greek philosopher, Democritus, was sitting around just thinking. He was thinking about cutting stuff up and came up with the idea that there must be a point where you could no longer cut something any smaller. He named the atom after the Greek word atomos, which means 'that which can't be split.'

8. Atomos:
“That which cannot be cut.”
Indivisible

9. 2. Identify the subatomic particles that make up an atom.
Protons, neutrons and electrons

10. The number of protons in an atom.
3. What is an element’s atomic number?
The number of protons in an atom.

11. Identify the atomic number of oxygen. Support your answer.

12. Observe the diagram below of a Carbon atom. Identify the atomic number
Observe the diagram below of a Carbon atom. Identify the atomic number. Support your answer.

13. 4. Describe what the nucleus of an atom consists of.
Protons and Neutrons

14. 5. Where are elections located in an atom?
Outside the nucleus

15. “Orbit” the nucleus in the electron cloud.

16. 6. Explain the meaning of the phrase “neutrons are neutral.”
Neutrons do not have a charge.
Neutrons are neither NEGATIVE or POSITIVE.

17. 7. Fill in the table below with the appropriate charge of each particle.
Protons
Neutron
Electron

18. SUBATOMIC PARTICLE
CHARGE (positive, negative or neutral)
LOCATION of subatomic particles (inside the nucleus OR outside the nucleus)
Protons
Electrons
Neutrons
POSITIVE
INSIDE THE NUCLEUS
NEGATIVE
OUTSIDE THE NUCLEUS
NEUTRAL
INSIDE THE NUCLEUS

19. Let’s review:
Identify the basic building block of matter.
Identify the THREE subatomic particles that make up an atom.
Describe the atomic number of an atom.
Describe the structure of an atom.

20. Review:
All matter is made up of
cells
atoms
molecules
compounds

21. A positively charged particle is
an electron   
a neutron  
a proton   
an isotope

22. Which of the following would be found outside the nucleus of an atom?
protons 
electrons   
neutrons  
protons and neutrons

23. A negatively charged particle is
an electron   
a neutron  
a proton   
an isotope

24. The subatomic particle that does not have a charge is the
electron   
neutron  
proton   
isotope

25. The subatomic particles found inside the nucleus are
electrons and protons   
neutrons and electrons   
protons and neutrons   
protons

26. The atomic number represents the
number of protons   
number of electrons  
number of protons and neutrons  
number of protons and electrons

27. Identify the type of solid in the diagram. REGULAR SOLID
2. Determine the volume to the nearest tenth.
L x W x H
10.0cm x 5.0cm x 3.0cm
= 150.0cm3

28. Identify the type of solid the toy dinosaur is.
IRREGULAR SOLID
2. Determine the volume of the toy dinosaur.
0.8mL
(5.6mL – 4.8mL)
3. Identify the name of this method.
displacement

29. Identify the length of the nail in cm to the nearest tenth. In mm?

30. Oxygen atom + -

31. - - + + - + - + + + - + + - - - Oxygen atom Nucleus Neutron Proton
Electron -

32. http://www. youtube. com/watch. v=lP57gEWcisY http://www. youtube

34. Activity: Element or Compound????
Carbon
Carbon dioxide (CO2)
Water (H2O)
Nitrogen
Glucose (C6H12O6)
Oxygen (O2)

35. 2. Which of the following is not an element?
oxygen
sodium chloride
hydrogen
nitrogen

36. 5. A chemical formula like CO2 represents
an element  
an atom   
an electron   
a compound

37. 6. A substance made up of two or more elements that have chemically combined is
a mixture 
an atom   
a compound
an element

38. 7. A substance that cannot be changed into simpler substances by a chemical change is called a (an)
element.
liquid.
solid.
mixture.

39. 8. Al, Cu, N, and O are symbols for
compounds.
elements.
mixtures.
molecules.

40. 9. A substance that contains only one kind of atom is called a (an)
compound.
molecule.
element.
nucleus.

41. 10. The fact that iron cannot be changed into a simpler form indicates that iron is a (an)
compound.
molecule.
element.
mixture.

42. 11. If an element is divided into smaller and smaller parts, the smallest particle obtained would be a (an)
molecule.
compound.
mixture.
atom.