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Properties of Matter Chapter 2 Pgs. 36-59.

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Presentation on theme: "Properties of Matter Chapter 2 Pgs. 36-59."— Presentation transcript:

1 Properties of Matter Chapter 2 Pgs

2 Classifying Matter Chapter 2 Section 1 Pg

3 What is MATTER? Anything that takes up ____ and has ____ Everything


5 PURE SUBSTANCES Matter that ______ has exactly the same composition
Ex: table salt and table sugar Every ______ of a given substance has the same properties because a substance has a fixed, ________ composition

6 SUBSTANCE ELEMENT: a substance that ______ be
broken into simpler substances *ATOM- ______ particle *a fixed composition because it contains only ___ type of atom *at room temperature most elements are _____, the rest are gases or liquids * represented by using a symbol (Periodic Table)

7 SUBSTANCE ELEMENTS Symbols - either one or two letters
- first letter ALWAYS ___________ - most are based on _____ names ex: gold- Au from aurum - allows for communication without _________ - name sometimes clue for __________

8 SUBSTANCE COMPOUND: a substance that is made from ___ or more simpler substances and ___ be broken down into those simpler substances (________) * Ex: water * properties ______ from those it is made of * always contains two or more elements joined in a _____ proportion

9 MIXTURES The __________ of a mixture can vary
because the composition of a mixture is not _____. _________ by how well the parts of the mixture are _________ throughout

10 MIXTURES _______________ - the substances are so ______ distributed
that it is difficult to distinguish one substance in the mixture from another - the parts of the mixture are noticeably ________ from one another

11 MIXTURES … solution, suspension, colloid …
based on the ____ of its largest _________

12 MIXTURES _________- forms when substances _______ and
form a homogeneous mixture * do NOT ______ light * do NOT settle or ________ * filtration does not work

13 MIXTURES _____________- a heterogeneous mixture that separates
into ______ over time * DO scatter light * DO settle or separate * _______ can be used

14 MIXTURES __________- contains some particles that are
____________ in size between the small particles in a solution and the larger particles in a _________ * DO scatter light * do NOT ________ into layers

15 Physical Properties Chapter 2 Section 2 Pg

16 Physical Properties of Matter
A physical property is any ___________ of a material that can be observed or measured without changing the ___________ of the substances in the material Ex: viscosity, conductivity, malleability, hardness, melting point, boiling point, and density

17 VISCOSITY The tendency of a liquid to keep from flowing- its __________ to flowing _____ liquids have a ______ viscosity (slow moving) Thin liquids have ___ viscosity (fast moving)

18 CONDUCTIVITY A material’s ability to allow ____ to flow
Conductors- materials that allow heat or electricity to flow ______ through them ex: metals Insulators- materials that _______allow heat or electricity to flow easily through them ex: wood


20 MALLEABILITY The ability of a solid to be hammered without ________ Most metals are ________ If a solid shatters when “hammered” it is ______

21 HARDNESS To compare _______ of two materials see which of the materials can ______ the other ________ is the hardest known material

______ Point- the point at which a substance changes from a _____ to a _____ _______ Point- the point at which a substance boils or changes from a liquid to a ____

23 Can be used to test the ______ of a substance
DENSITY Can be used to test the ______ of a substance density = mass/volume

24 Using Physical Properties
________ the material Choosing for a specific ________ _________ the substances in a mixture __________ the substances

25 Using Physical Properties
Steps to follow in using the physical properties to ______ a material Decide which _______ to test Do tests on a sample of the _______ ________ the results with information you have on the known materials

26 Using Properties to Separate Mixtures
__________- filtering the material, used to separate the different _____ of material in the mixture __________- boiling the materials, used to _______ the different substances due to their boiling points

27 PHYSICAL CHANGE Occurs when some of the physical properties of a material _______, but the ________ remain the same ___________ of the material remains intact regardless of the change

28 Chemical Properties Chapter 2 Section 3 Pg

29 CHEMICAL PROPERTY Any ability to produce a ______ in the composition of ______ Observed when the substances in a sample of matter are changing into ________ substances

30 FLAMMABILITY A materials ability to burn in the presence of ______
Oxygen supports the _______, without it there would be no _____

31 REACTIVITY How readily a substance combines ________ with other substances Some examples of _____ reactive elements: O, F, Cl, Na, Mg Rust- iron oxide Some examples of low ______ elements: N, Al, P Some examples of all most _________ elements: He, Ar, Ne, Kr

32 Recognizing CHEMICAL CHANGE
Occurs when a substance _____ and forms one or more ___ substances 3 common types of a chemical change Change in _____- tarnished, rusted, etc. Production of ____- fermented, spoiled Formation of a ________- solid present in a liquid mixture ex: spoiled milk

33 Recognizing Chemical Change
Color change

34 Recognizing Chemical Change
Production of Gas

35 Recognizing Chemical Change
Formation of Precipitate

36 Chemical Change vs. Physical Change
Not always easy to determine Different ________ present after change occurs between original substances then a _______ change took place If different substances are not _____ then only a ______ change

37 Chemical Change vs. Physical Change
The __________ of matter has to change or remain unchanged to __________ if a chemical change or physical change had taken place

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