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∙ 14y agoThe property/ies that distinguish it from other substances: hydrogen and helium are both lighter-than-air gases, hydrogen burns readliy in air, helium does not.
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What are facts about pure substances?
cannot be separated into 2 or more substances by physical or mechanical meansis homogeneous, ie, has uniform composition throughout the whole sampleits properties are constant throughout the whole sampleits properties do not depend on how it is prepared or purifiedhas constant chemical composition
What are two physical properties that don't depend on size?
hardness and temperature
A combination of two or more atoms that has physical and chemical properties that differ from the atoms that compose it is called?
I'm pretty sure is is a Compound. A compound is a substance that is made up of more than on element. The properties of matter mostly depend on how atoms of different elements are combined in compounds.
Is it true that unknown compounds can usually be identified based solely on their physical properties.?
it is not true that some compounds can usually be indetified based solely on their physical properties.
What are extensive properties give two examples of extensive properties-?
Properties that depend on the amount of substance present, such as mass,length,volume,etc. Properties that depend on the amount of substance present, such as mass,length,volume,etc. Properties that depend on the amount of substance present, such as mass,length,volume,etc.Extensive means covering over a big area. This word is a adjective.
Properties that depend on the substances reaction with other substances?
Chemical properties are properties that depend on the substances reactions with other substances. Physical properties can be observed without changing the composition of the matter.
Pure substance definition?
A pure substance:cannot be separated into 2 or more substances by physical or mechanical meansis homogeneous, ie, has uniform composition throughout the whole sampleits properties are constant throughout the whole sampleits properties do not depend on how it is prepared or purifiedhas constant chemical composition
What are the two type of changes?
The two types of physical properties are intensive and extensive. Intensive properties do not depend on the amount of a substance. An example of an intensive property is density. Extensive properties do depend on the amount of a substance. An example of an extensive property is mass.
Describe 2 physical changes?
The two types of physical properties are intensive and extensive. Intensive properties do not depend on the amount of a substance. An example of an intensive property is density. Extensive properties do depend on the amount of a substance. An example of an extensive property is mass.
What are facts about pure substances?
cannot be separated into 2 or more substances by physical or mechanical meansis homogeneous, ie, has uniform composition throughout the whole sampleits properties are constant throughout the whole sampleits properties do not depend on how it is prepared or purifiedhas constant chemical composition
Is conductivity intensive property?
Conductivity is an intensive property. Intensive properties are associated with the physical properties of a substance, and include things like melting point, ductility, malleability, density, and freezing point. These are characteristics of a substance that do not depend on the amount of the matter present.
What are examples of intensive physical properties of a substance?
An intensive physical property does not depend on the size of the sample. An example of an intensive physical property is density. An extensive physical property does depend on the size of the sample, such as mass and volume.
What is the temperature of solid turning to liquid?
It will depend on the chemical composition of the substance you are liquefying.
What are two physical properties that don't depend on size?
hardness and temperature
How are chemical and physical properties related?
Physical properties are those that can be observed without changing the identity of the substance. The general properties of matter such as color, density, hardness, are examples of physical properties. Properties that describe how a substance changes into a completely different substance are called chemical properties. Flammability and corrosion/oxidation resistance are examples of chemical properties.
Do the properties of a mineral depend on the type of mineral?
Yes each different mineral will have a unique set of physical properties.
Is a chalk grinding a physical change?
It doesn't matter if something is reversible or irreversible. it will not depend if it is a chemical or physical change. A physical change is when the composition of a substance remains unaltered (the particles stay the same) and no new substance is produced. Such as when you make a paper plane out of paper, the appearance changed, the particles stayed the same, no new substance was created, and the paper remains paper. A chemical change is when the composition of a substance is altered and a new substance is produced. Such as when paper is burned, the new substance produced is the carbon and other gases from the fire, and the composition of the paper changes, slowly disappearing.It usually is unless you draw so rapidly that the heat of the friction heats the paper and causes it to smoke.
