Question: What is matter?
Answer: -anything that has mass and takes up space
-the "stuff"(atoms and molecules) that makes up the universe
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Question: General Definition of Characteristic Properties of Matter:
Answer: -helps scientists identify a particular substance
-always the same for each kind of matter(ex: metal will always be lustrous, pure water is always clear)
-doesn't change even thought the shape or amount of matter may change
ex: eye color, hair color, skin color, fingerprints
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Question: General Definition of Physical Properties of Matter:
Answer: -physical properties can be
-seen or measured without changing the identity of the substance
-identified or described with senses
-melting point, boiling point, freezing point=help identify a substance because they stay the same
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Question: Examples of Physical Properties of Matter:
Answer: -state of matter at room temp(solid, liquid or gas)
-density
-magnetic properties
-solubility(will it dissolve in another substance?)
-conductivity(conducts heat or electricity)
-ductility(can it be drawn into a wire?)
-malleability(can it be pounded into a thin sheet?)
-texture
-odor
-color
-freezing point
-boiling point
-melting point
-buoyancy
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Question: General Definition of Chemical Properties:
Answer: -chemical properties
-may not be observed with your senses
-determines how a substance interacts with another substance
-determine if the substance can change into a new substance with different properties
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Question: Examples of Chemical Properties:
Answer: -flammability/combustibility
-alkalinity
-pH/acidity/basicness
-reactivity(ex: oxidation)
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Question: True or false and why: Mass and volume are considered properties of matter.
Answer: False; mass and volume change depending on the amount of the substance, whereas other properties such as odor, color, and smell stay the same no matter the size of the sample
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Question: What's the difference between a physical property and a chemical property?
Answer: A physical property can be observed by using our senses, where as chemical properties are observed through a chemical change, or reaction.
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Question: What's the difference between a characteristic and non-characteristic property?
Answer: A characteristic property is used to identify a substance. A non-characteristic property is used to describe but NOT identify a substance.
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Question: You are given a box & told there is something inside with a mass of 50g.
a) Does knowing the mass allow you to identify what is in the box?
b) What kind of property must mass be: characteristic or non-characteristic?
Answer: a) no
b) non-characteristic because sooooo manyyyy objects can way 50g. Knowing the mass would only help to describe, not identify an unknown object or substance.
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Question: Give an example of a physical and characteristic property.
Answer: fingerprints, etc
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Question: Characteristic Properties(the ones that aren't non-characteristic)
Answer: Properties that can be used to describe AND identify a substance
examples:
-density
-solubility
-melting point
-electrical conductivity
-magnetism
-boiling point
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Question: Non-characteristic properties
Answer: Properties that can be used to describe but NOT identify a substance
examples:
-temperature
-mass
-color
-hardness
-volume
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Question: Which of the following is a characteristic property of matter?
a) color
b) mass
c) age
d) weight
Answer: a) color
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Question: A wall that was once white was painted black. Which of the following is definitely true of the painted wall?
a) Its chemical properties have changed
b) Its physical properties have changed
c) Both its physical and chemical properties have changed
d) None of its characteristic properties have changed
Answer: b) Its physical properties have changed
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Question: Which of the following is a chemical property of matter?
a) acidity
b) odor
c) electrical conductivity
d) color
Answer: a) acidity
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Question: Which of the following could be true of the product of a chemical reaction?
a) It is more acidic than any of the substances that went into the reaction.
b) It has a higher pH than any of the substances that went into the reaction.
c) It burns less easily than any of the substances that went into the reaction.
d) All of the above.
Answer: d) All of the above
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Question: Acids have the ability to react with bases to become salts. This is a statement about the acids' _____________.
a) chemical properties
b) physical properties
c) chemical and physical properties
d) visual properties
Answer: a) chemical properties
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Question: Which of the following would NOT affect an object's characteristic properties?
a) The object is exposed to great heat.
b) The object is exposed to great pressure.
c) The object is cut into tiny pieces.
d) The object undergoes radioactive decay.
Answer: c) The object is cut into tiny pieces.
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Question: What is matter? Answer: -anything that has mass and takes up space -the "stuff"(atoms and molecules) that makes up the universe ================================================== Question: General Definition of Characteristic Properties of Matter: Answer: -helps scientists identify a particular substance -always the same for each kind of matter(ex: metal will always be lustrous, pure water is always clear) -doesn't change even thought the shape or amount of matter may change ex: eye color, hair color, skin color, fingerprints ================================================== Question: General Definition of Physical Properties of Matter: Answer: -physical properties can be -seen or measured without changing the identity of the substance -identified or described with senses -melting point, boiling point, freezing point=help identify a substance because they stay the same ================================================== Question: Examples of Physical Properties of Matter: Answer: -state of matter at room temp(solid, liquid or gas) -density -magnetic properties -solubility(will it dissolve in another substance?) -conductivity(conducts heat or electricity) -ductility(can it be drawn into a wire?) -malleability(can it be pounded into a thin sheet?) -texture -odor -color -freezing point -boiling point -melting point -buoyancy ================================================== Question: General Definition of Chemical Properties: Answer: -chemical properties -may not be observed with your senses -determines how a substance interacts with another substance -determine if the substance can change into a new substance with different properties ================================================== Question: Examples of Chemical Properties: Answer: -flammability/combustibility -alkalinity -pH/acidity/basicness -reactivity(ex: oxidation) ================================================== Question: True or false and why: Mass and volume are considered properties of matter. Answer: False; mass and volume change depending on the amount of the substance, whereas other properties such as odor, color, and smell stay the same no matter the size of the sample ================================================== Question: What's the difference between a physical property and a chemical property? Answer: A physical property can be observed by using our senses, where as chemical properties are observed through a chemical change, or reaction. ================================================== Question: What's the difference between a characteristic and non-characteristic property? Answer: A characteristic property is used to identify a substance. A non-characteristic property is used to describe but NOT identify a substance. ================================================== Question: You are given a box & told there is something inside with a mass of 50g. a) Does knowing the mass allow you to identify what is in the box? b) What kind of property must mass be: characteristic or non-characteristic? Answer: a) no b) non-characteristic because sooooo manyyyy objects can way 50g. Knowing the mass would only help to describe, not identify an unknown object or substance. ================================================== Question: Give an example of a physical and characteristic property. Answer: fingerprints, etc ================================================== Question: Characteristic Properties(the ones that aren't non-characteristic) Answer: Properties that can be used to describe AND identify a substance examples: -density -solubility -melting point -electrical conductivity -magnetism -boiling point ================================================== Question: Non-characteristic properties Answer: Properties that can be used to describe but NOT identify a substance examples: -temperature -mass -color -hardness -volume ================================================== Question: Which of the following is a characteristic property of matter? a) color b) mass c) age d) weight Answer: a) color ================================================== Question: A wall that was once white was painted black. Which of the following is definitely true of the painted wall? a) Its chemical properties have changed b) Its physical properties have changed c) Both its physical and chemical properties have changed d) None of its characteristic properties have changed Answer: b) Its physical properties have changed ================================================== Question: Which of the following is a chemical property of matter? a) acidity b) odor c) electrical conductivity d) color Answer: a) acidity ================================================== Question: Which of the following could be true of the product of a chemical reaction? a) It is more acidic than any of the substances that went into the reaction. b) It has a higher pH than any of the substances that went into the reaction. c) It burns less easily than any of the substances that went into the reaction. d) All of the above. Answer: d) All of the above ================================================== Question: Acids have the ability to react with bases to become salts. This is a statement about the acids' _____________. a) chemical properties b) physical properties c) chemical and physical properties d) visual properties Answer: a) chemical properties ================================================== Question: Which of the following would NOT affect an object's characteristic properties? a) The object is exposed to great heat. b) The object is exposed to great pressure. c) The object is cut into tiny pieces. d) The object undergoes radioactive decay. Answer: c) The object is cut into tiny pieces. ==================================================