Download presentation
Presentation is loading. Please wait.
Published byHayden Pannell Modified over 9 years ago
1
What is matter? Bellwork: Put a check next to each item on the sheet that you believe to be matter.
2
Notes
4
How to Measure MASS MASS – the amount of MATTER in an object; measured in grams (gm) Triple Beam Balance
5
Mass- digital scale
6
How to Measure VOLUME Graduated Cylinder
(Liquid Volume) – The amount or liquid; measured in milliliters (ml) Graduated Cylinder
9
A meniscus is the curve of the surface of the water in a graduated cylinder.
Water "sticks" to the walls of the graduated cylinder, but only on the sides and not the middle. When you look at the surface, the water level is not straight – it’s curved like a smile.
10
Measurement should be at the BOTTOM of the meniscus.
Read the meniscus at eye level in to get an accurate reading. Read the meniscus at eye level. Read the volume here
11
Volume of a regular solid object
To measure the volume of a regular solid object (a cube or rectangular object), you multiply its length, width, and height.
12
Volume of an Irregular Object
The volume of an irregular object can be found by measuring displaced water in a graduated cylinder.
14
Notes Volume – the amount of space that matter takes up.
Of a liquid – measure in a beaker or g.c. Of a regular solid – L x W x H Of an irregular object – displacement in a g.c.
15
Density Density – the amount of matter in a given space.
Which is more dense a golf ball or table tennis ball? Why? How do their volumes compare? Their masses?
16
Density Density = Mass Volume
17
Density can help identify a substance
18
Physical Properties (Fill in Spider)
Ways to physically describe matter: density physical state (solid, liquid or gas at certain temperatures and pressures) color odor solubility in water (the ability of substance to dissolve in water)
19
Some more examples of physical properties are:
melting point boiling point hardness malleability conductivity
20
Chemical Property A chemical property describes an object/substances’ ability to change into something new. FLAMMABILITY REACTIVITY
21
Some examples of chemical properties are:
paper burns iron rusts gold does not rust wood rots nitrogen does not burn silver does not react with water sodium reacts with water
22
In each of these, the substance's chemical property is its tendency to:
react tarnish corrode explode
23
Physical vs. Chemical Properties
Wood Physical Property: Grainy texture Chemical Property: Flammable
24
Physical vs. Chemical Properties
Baking Soda Physical Property: White powder Chemical Property: Reacts with vinegar to produce bubbles
25
Physical vs. Chemical Properties
Iron Physical Property: Malleable (able to be shaped) Chemical Property: Reacts with oxygen to form rust
26
DRAW IN NOTEBOOK Physical Chemical
Wood Bike Gasoline Penny Mentos
27
Physical and Chemical Changes
Same or Different
28
Physical Change Changes only the physical property of the substance
An example of a physical change occurs when making a baseball bat. Wood is carefully crafted into a shape which will allow a batter to best apply force on the ball. Even though the wood has changed shape and therefore physical properties, the chemical nature of the wood has not been altered. The bat and the original piece of wood are still the same chemical substance.
30
Ice melting: an example of physical change
The material itself is the same before and after the change. The change CAN be “undone.” Ice melting: an example of physical change Ice melting: an example of physical change
31
Chemical Change Occurs when one or more substances are changed into entirely NEW substances They have different properties from the original substance Some signs (or evidence) of chemical change are: a gas is produced, the temperature changes, a substance disappears, a solid is formed a color change occurs, a new odor is produced.
32
Examples of Physical and Chemical Changes
Physical Changes Chemical Changes Aluminum foil is cut in half. Milk goes sour. Clay is molded into a new shape. Jewelry tarnishes. Butter melts on warm toast. Toast is burnt Water evaporates from the surface of the ocean. Rust forms on a nail left outside. A juice box in the freezer freezes. Gasoline is ignited. Rubbing alcohol evaporates on your hand. Hydrogen peroxide bubbles in a cut. A stick is broke in two. Food scraps are turned into compost in a compost pile. A window is shattered. A match is lit. A car is wrecked You take an antacid to settle your stomach. Hair is cut Your body digests food.
33
More examples
34
Summing it Up Physical Change: Chemical Change:
The matter is the same. The original matter can be recovered. The particles of the substance are rearranged. Chemical Change: The matter is different. The old matter is no longer present. The original matter cannot be recovered.
35
Physical or Chemical Change?
How do you know? (Fill in the sheet on page 66 for these examples)
36
Physical or Chemical Change?
Burnt Toast
37
Physical or Chemical Change?
the process cannot be undone the toast it burnt
38
Physical or Chemical Change?
Vinegar and Baking Soda
39
Physical or Chemical Change?
the process cannot be undone A gas is produced
40
Physical or Chemical Change?
Ice Melting
41
Physical or Chemical Change?
the process can be undone hasn’t changed the chemicals still H2O
42
Physical or Chemical Change?
Glowsticks
43
Physical or Chemical Change?
the process cannot be undone energy is given off in the form of light
44
Physical or Chemical Change?
Bleach on Construction Paper
45
Physical or Chemical Change?
the process cannot be undone a substance disappears (color) color change occurs
46
Physical or Chemical Change?
Apples turn brown
47
Physical or Chemical Change?
the process cannot be undone color change occurs
48
Physical or Chemical Change?
Alka-Seltzer and Water
49
Physical or Chemical Change?
the process cannot be undone a gas is produced a substance disappears
50
Physical or Chemical Change?
Tarnished Penny
51
Physical or Chemical Change?
the process cannot be undone a color change occurs
52
Physical or Chemical Change?
Broken Pencil
53
Physical or Chemical Change?
the process can be undone hasn’t changed the chemicals
54
Physical or Chemical Change?
Burned Paper
55
Physical or Chemical Change?
the process cannot be undone a substance has disappeared a gas is produced a color change occurs
56
Physical or Chemical Change?
Burning Candle
57
Physical or Chemical Change?
the process cannot be undone a substance has disappeared heat is produced a color change occurs
58
Physical or Chemical Change?
Torn Paper
59
Physical or Chemical Change?
the process can be undone hasn’t changed the chemicals
Similar presentations
© 2025 SlidePlayer.com. Inc.
All rights reserved.