Gen chem week 3

43問 • 1年前

Lawrence Frias

通報

問題一覧

Particles composing matter

atoms, molecules, ions

These are the smallest unit of matter that can't be broken down chemically.

atoms

These are groups of two or more atoms that are chemically bonded.

molecules

These are particles that have gained or lost one or more of their valence electrons.

ions

States of matter

solid, liquid, gas, plasma, bose-einstein condensate

It is a hot ionized gas consisting of approximately equal numbers of positively charged ions and negatively charged electrons. The characteristics of _______ are significantly different from those of ordinary neutral gases so that ______ are considered a distinct "fourth state of matter."

plasma

It is a state of matter in which separate atoms or subatomic particles, cooled to near absolute zero. When they reach that temperature the atoms are hardly moving relative to each other; they have almost no free energy to do so. At that point, the atoms begin to clump together, and enter the same energy states.

bose-einstein condensate

Properties of matter

physical properties, chemical properties, intensive properties, extensive properties

These can be measured and observed without changing the composition of the substance.

physical properties

These are the ability of a substance to react with other substances such as air, water, and base.

chemical properties

It does not depend on the size or amount of the sample.

intensive properties

These can be affected by the size and amount of samples.

extensive properties

According to changed involved during measurements of the property

physical properties, chemical properties

According to dependence on amount of matter

intensive properties, extensive properties

Intensive physical properties

color, solubility, luster, melting point, conductivity, viscosity, density, malleability, boiling point

Extensive physical properties

mass, volume, length

Chemical properties

combustibility, stability, reactivity, relative activity, ionization, toxicity

Matter

pure substance, mixtures

Pure substance

element, compound

Mixtures

homogenous mixture, heterogenous mixture

anything that cannot be broken down through physical means. will always have the same composition. are either elements or compounds.

pure substance

-The simplest pure substance that makes up matter, made up only of one kind of atom It cannot be broken down into other substances by either physical or chemical means.

elements

Each ______ is made up of a particular kind of atom: a pure sample of the element aluminum contains only aluminum atoms. Thus, an element contains only one kind of atom.

element

Made up of two or more different kinds of atoms chemically combined always contains atoms of different elements. although it contains more than one type of atom, always has the same composition-that is, the same combination of atoms.

compounds

can be defined as something that has variable composition. can be classified as either homogeneous or heterogeneous.

mixture

is the same throughout does not vary in composition from one region to another.

homogenous mixture

A homogeneous mixture or one-phase mixture

solution

Substance being dissolved

solute

A dissolving medium

solvent

Contains the maximum amount of solute that a given quantity of solvent can dissolve

saturated solution

Having a lesser amount of solute than what the given quantity of solvent can dissolve

unsaturated solution

Contains solute that is more than what the given solvent can dissolved.

supersaturated solution

contains regions that have different properties from those of other regions Have two or more components that are visible as separate phases Their particles are not evenly distributed throughout the system and are mostly visible even with the unaided eye. It can be suspensions or colloids

heterogenous mixture

Have solute particles big enough to settle at the bottom of the mixture and can be alternately filtered to separate particles through filtration.

suspensions

Intermediate to a solution and a suspension It can be cloudy, but separation of components and settling of particles cannot be observed.

colloids

Exhibit the Tyndall effect

colloids

A phenomenon observed in dispersed colloid particles once light is directed to such mixtures. The dispersed solutes scatter and reflect the light.

tyndall effect

Whether the substance undergoes combustion or not

combustibility

Whothor the substanco can be easily decomposed or not

stability

Whether it reacts with acids, bases, and oxygen, gas or not

reactivity

Whether the material is more active or less active than other members of its chemical family

relative activity

Whether it will break into charged particles when in solution with water or not.

ionization

Whether substance can damage an organism or not.

toxicity

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問題一覧

Particles composing matter

atoms, molecules, ions

These are the smallest unit of matter that can't be broken down chemically.

atoms

These are groups of two or more atoms that are chemically bonded.

molecules

These are particles that have gained or lost one or more of their valence electrons.

ions

States of matter

solid, liquid, gas, plasma, bose-einstein condensate

plasma

bose-einstein condensate

Properties of matter

physical properties, chemical properties, intensive properties, extensive properties

These can be measured and observed without changing the composition of the substance.

physical properties

These are the ability of a substance to react with other substances such as air, water, and base.

chemical properties

It does not depend on the size or amount of the sample.

intensive properties

These can be affected by the size and amount of samples.

extensive properties

According to changed involved during measurements of the property

physical properties, chemical properties

According to dependence on amount of matter

intensive properties, extensive properties

Intensive physical properties

color, solubility, luster, melting point, conductivity, viscosity, density, malleability, boiling point

Extensive physical properties

mass, volume, length

Chemical properties

combustibility, stability, reactivity, relative activity, ionization, toxicity

Matter

pure substance, mixtures

Pure substance

element, compound

Mixtures

homogenous mixture, heterogenous mixture

anything that cannot be broken down through physical means. will always have the same composition. are either elements or compounds.

pure substance

-The simplest pure substance that makes up matter, made up only of one kind of atom It cannot be broken down into other substances by either physical or chemical means.

elements

Each ______ is made up of a particular kind of atom: a pure sample of the element aluminum contains only aluminum atoms. Thus, an element contains only one kind of atom.

element

compounds

can be defined as something that has variable composition. can be classified as either homogeneous or heterogeneous.

mixture

is the same throughout does not vary in composition from one region to another.

homogenous mixture

A homogeneous mixture or one-phase mixture

solution

Substance being dissolved

solute

A dissolving medium

solvent

Contains the maximum amount of solute that a given quantity of solvent can dissolve

saturated solution

Having a lesser amount of solute than what the given quantity of solvent can dissolve

unsaturated solution

Contains solute that is more than what the given solvent can dissolved.

supersaturated solution

heterogenous mixture

Have solute particles big enough to settle at the bottom of the mixture and can be alternately filtered to separate particles through filtration.

suspensions

Intermediate to a solution and a suspension It can be cloudy, but separation of components and settling of particles cannot be observed.

colloids

Exhibit the Tyndall effect

colloids

A phenomenon observed in dispersed colloid particles once light is directed to such mixtures. The dispersed solutes scatter and reflect the light.

tyndall effect

Whether the substance undergoes combustion or not

combustibility

Whothor the substanco can be easily decomposed or not

stability

Whether it reacts with acids, bases, and oxygen, gas or not

reactivity

Whether the material is more active or less active than other members of its chemical family

relative activity

Whether it will break into charged particles when in solution with water or not.

ionization

Whether substance can damage an organism or not.

toxicity