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1.1. Review Practice Review Practice Open Response Open Response
QuestionsQuestions
2. Classifying Matter2. Classifying Matter3.3. Physical vs. Physical vs.
Chemical ChangesChemical Changes---------------
HomeworkStudy Guide- DUE
Tomorrow
1.1. Review Practice Review Practice Open Response Open Response
QuestionsQuestions
2. Classifying Matter2. Classifying Matter3.3. Physical vs. Physical vs.
Chemical ChangesChemical Changes---------------
HomeworkStudy Guide- DUE
Tomorrow
Major Celebration of Knowledge NEXT
TuesdayReading chemical
formulas, measuring matter & physical vs.
chemical changes
Major Celebration of Knowledge NEXT
TuesdayReading chemical
formulas, measuring matter & physical vs.
chemical changes
A. Identify what property of the sample is being measured with the graduated cylinder.
The property being measured with the graduated cylinder
is volume of a liquid.
The property being measured with the graduated cylinder
is volume of a liquid.
B. Identify the measurement of the sample in the graduated cylinder. Include units!
The graduated cylinder shows a measurement of
36.5 mL.
The graduated cylinder shows a measurement of
36.5 mL.
C. Identify the measurement of the sample in the beaker. Include units.
The beaker shows a measurement of 35
mL.
The beaker shows a measurement of 35
mL.
D. Explain why the measurements would be recorded differently when the sample is in the graduated cylinder and when it is in the beaker.
The graduated cylinder is used to
get a more accurate measurement
because it has more intervals.
The graduated cylinder is used to
get a more accurate measurement
because it has more intervals.
Topic Sentence
For 1st PropertyA.B.C.
For 2nd PropertyA.B.C.
Conclusion
Complete Sentences!
Complete Sentences!
A. Identify the two properties of the cube that must be known in order for Jorge to determine the density of the cube.
The two properties that must be known to determine the
density of the cube are mass and volume.
The two properties that must be known to determine the
density of the cube are mass and volume.
B. Describe how Jorge could measure each of the properties of the cube you identified in part (a). Be sure to identify any tools Jorge would use and describe how he would use them.
Jorge can use a triple beam balance to measure the mass of the cube. To
determine the volume of the cube, he could use a ruler to measure the length,
width and height of the cube and multiply them together.
Jorge can use a triple beam balance to measure the mass of the cube. To
determine the volume of the cube, he could use a ruler to measure the length,
width and height of the cube and multiply them together.
C. Explain how the measurements you described in part (b) can be used to determine the density of the cube.
The mass and volume of an object can be used to determine
the density of the material. Density equals mass divided by
volume.
The mass and volume of an object can be used to determine
the density of the material. Density equals mass divided by
volume.
Physical ChangesPhysical Changes Chemical ChangesChemical Changes
1.1. Review Practice Review Practice Open Response Open Response
QuestionsQuestions
2. Classifying Matter2. Classifying Matter3.3. Physical vs. Physical vs.
Chemical ChangesChemical Changes---------------
HomeworkStudy Guide- DUE
Tomorrow
1.1. Review Practice Review Practice Open Response Open Response
QuestionsQuestions
2. Classifying Matter2. Classifying Matter3.3. Physical vs. Physical vs.
Chemical ChangesChemical Changes---------------
HomeworkStudy Guide- DUE
Tomorrow
Major Celebration of Knowledge NEXT
TuesdayReading chemical
formulas, measuring matter & physical vs.
chemical changes
Major Celebration of Knowledge NEXT
TuesdayReading chemical
formulas, measuring matter & physical vs.
chemical changes
Matter is everywhere. Matter is anything that takes up space
and has mass. Matter is constantly experiencing both
chemical and physical changes.
A physical change alters the form of a substance, but does not change it to another substance.
It changes shape or size It dissolves. It changes phase (freezes,
boils, evaporates, condenses) Example:
Making Orange Juice
Physical changes occur when matter changes its
property but not its chemical nature.
Physical property changes could include a change
in: texture, shape, size, color, odor, volume, mass,
weight, and density.
Chemical changes are changes matter undergoes
when it becomes new or different matter.
It burns
Temperature changes without heating/cooling
It bubbles (makes a gas)
It changes color
It forms a precipitate
When a substance undergoes a chemical change, it is changed into a different substance with different properties.
To identify a chemical change look for signs such as color change, bubbling and fizzing, light production, smoke, and presence of heat.
Example:
Baking a Cake
1. Precipitation
2. Color Change
4. Temperature
Change
3. Gas Production
A chemical change occurs when fireworks are used. Fireworks are made of metals such as magnesium and copper. These change chemically as they light up the sky.
Sugar dissolving in tea
Examples for Chemical Change
Logs burning
Breaking water up by separating it into hydrogen and oxygen
Physical Change
Ice melting?
Toast burning?
Chemical Change
Rocket fuel burning?
Chemical Change
Metal rusting?
Chemical Change
Crushing an aspirin
A Boiled egg
Physical
Change
Cutting paper?
Physical Change
Physical Change
Sawing wood?
Disappearing puddle?
Physical Change
Candle burning?
Chemical Change
Tears up paper?
Physical change
Mixes salt and water?
Physical change
Burns paper?
Chemical change
Evaporates salt water?
Physical change
Mixes vinegar and baking soda?
Chemical change
Write a paragraph about the difference between a chemical
and physical change. Give examples of each.