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Matter and Energy.

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Presentation on theme: "Matter and Energy."— Presentation transcript:

1 Matter and Energy

2 Matter and Energy Matter: Forms, Structure, and Quality Elements
Compounds

3 Matter and Energy Matter: Forms, Structure, and Quality
The structure of elements and compounds Atom - the basic building block of all chemical elements

4 Matter and Energy Matter: Forms, Structure, and Quality
The structure of elements and compounds Molecule - a combination of two or more atoms of the same or different elements held together by chemical bonds

5 Matter and Energy Matter: Forms, Structure, and Quality
The structure of elements and compounds Ion - an atom or a group of atoms with one or more positive (+) or negative (-) electrical charges Na+1

6 Matter and Energy Matter: Forms, Structure, and Quality
The structure of atoms and molecules Subatomic particles Protons (+) Neutrons (o) Electrons (-)

7 Matter and Energy Matter: Forms, Structure, and Quality
The structure of atoms and molecules Atomic Number (AN) - number of protons in the nucleus of a chemical element Hydrogen: AN = 1 Carbon: AN = 6 Uranium: AN = 92

8 Matter and Energy Matter: Forms, Structure, and Quality
The structure of atoms and molecules Mass Number (MN) - the total number of neutrons and protons in the nucleus of an atom Hydrogen: MN = 1 proton + 0 neutron = 1 Uranium: MN = 92 protons neutrons = 235

9 Matter and Energy Matter: Forms, Structure, and Quality
The structure of atoms and molecules # protons = # electrons No net electrical charge

10 Matter and Energy Matter: Forms, Structure, and Quality
The structure of atoms and molecules Isotope - two or more forms of a chemical element that have the same number of protons but different numbers of neutrons in their nuclei

11 Matter and Energy Matter: Forms, Structure, and Quality
The structure of atoms and molecules Ion - an atom or group of atoms with one or more positive or negative electrical charges

12 Matter and Energy Matter: Forms, Structure, and Quality
The structure of atoms and molecules Ions Sodium (Na) 11 protons + 11 electrons  no net charge Loses 1 electron 11 electrons + 10 protons  net + 1 charge (Na+1)

13 Matter and Energy Matter: Forms, Structure, and Quality
The structure of atoms and molecules Types of chemical bonds Ionic Covalent Hydrogen

14 Matter and Energy Matter: Forms, Structure, and Quality
The structure of atoms and molecules Types of chemical bonds Ionic Bond - bond formed by attraction between oppositely charged ions

15 Matter and Energy Matter: Forms, Structure, and Quality
The structure of atoms and molecules Types of chemical bonds Covalent Bond - bond formed by the sharing of electrons between atoms

16 Matter and Energy Matter: Forms, Structure, and Quality
The structure of atoms and molecules Types of chemical bonds Hydrogen Bond - occurs between molecules in which hydrogen is bonded to nitrogen, oxygen, or fluorine

17 Matter and Energy Matter: Forms, Structure, and Quality
Types of Compounds Organic Inorganic

18 Matter and Energy Matter: Forms, Structure, and Quality
Types of Compounds Organic Compounds - compounds that contain carbon atoms that are bonded to other carbon atoms and/or with atoms of H, O, N, S, Cl, F

19 Matter and Energy Matter: Forms, Structure, and Quality
Types of Compounds Examples of Organic Compounds Hydrocarbons Methane gas (CH4) Chlorinated hydrocarbons DDT (C14H9Cl5)

20 Matter and Energy Matter: Forms, Structure, and Quality
Types of Compounds Examples of Organic Compounds Chloroflurocarbons Freon-12 (CCl2F2) Simple carbohydrates Glucose (C6H12O6)

21 Matter and Energy Matter: Forms, Structure, and Quality
Types of Compounds Examples of Organic Compounds Complex carbohydrates Proteins Nucleic Acids

22 Matter and Energy Matter: Forms, Structure, and Quality
Types of Compounds Examples of Inorganic Compounds Salt (NaCl) Water(H2O) Carbon dioxide (CO2) Hydrochloric acid (HCl)

23 Matter and Energy Matter: Forms, Structure, and Quality Matter Quality
Matter Quality - a measure of how useful a matter resource is based on its availability and concentration

24 Matter and Energy Energy: Forms and Quality Classification of Energy
Kinetic Potential Electromagnetic radiation

25 Matter and Energy Energy: Forms and Quality Forms of Kinetic Energy
Heat - total kinetic energy of all moving atoms, ions, and molecules within a given substance Temperature - the average speed of motion of the atoms, ions, and molecules in a sample of matter at a given moment

26 Matter and Energy Energy: Forms and Quality Energy Quality
Energy Quality - the measure of an energy source’s ability to do useful work

27 Matter and Energy Physical, Chemical, and Nuclear Changes in Matter
Physical Change - a change that involves no change in the chemical composition of the material

28 Matter and Energy Physical, Chemical, and Nuclear Changes in Matter
Chemical Change - a change that involves changes in the chemical composition of the elements or compounds involved

29 Matter and Energy Physical, Chemical, and Nuclear Changes in Matter
Nuclear Changes - a process in which nuclei of certain isotopes spontaneously change into one or more different isotopes

30 Matter and Energy Physical, Chemical, and Nuclear Changes in Matter
Types Natural radioactive decay Nuclear fission Nuclear fusion

31 Matter and Energy Physical, Chemical, and Nuclear Changes in Matter
Natural radioactive decay - process in which unstable isotopes spontaneously emit high-energy, fast moving particles

32 Matter and Energy Physical, Chemical, and Nuclear Changes in Matter
Nuclear Fission - nuclear change in which the unstable nuclei isotopes are split into lighter nuclei when hit by a neutron

33 Matter and Energy Physical, Chemical, and Nuclear Changes in Matter
Nuclear Fusion - nuclear change in which two isotopes of light elements (H) are forced together at high temperatures until they fuse to form a heavier nucleus

34 Matter and Energy The Law of Conservation of Matter
The Law of Conservation of Matter -in any physical or chemical change, matter is neither created nor destroyed, but merely changed from one form to another

35 Matter and Energy The Laws of Energy
First Law of Energy - in all physical and chemical changes, energy is neither created nor destroyed, but it may be converted to one form or another

36 Matter and Energy The Laws of Energy
Second Law of Energy - in any conversion of energy from one form to another, some of the high quality useful energy is converted to lower-quality, more dispersed, less useful energy


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