Hesi A2 Chemistry exam 2023/ 60
Questions and Answers/ Verified.
Mixture with uniform density throughout and no distinguishable
coponents. - -Homogeneous Mixture
-Mixture in which the components are readily distinguished. - -
Heterogeneous Mixture
-A change in which the checmical composition of a substance
remains the same. - -Physical Change
-A change in which the chemical bonds are broken and reformed
to create a new and different substance. - -Chemical Change
-The simplest of substances and is represented by a specific
letter or combinations of letters. - -Element
-Combinations of eleements in whole number ratios. - -
Compounds
-Mass cannot be created or destroyed during a chemical reaction.
- -Law of Conservation of Mass
, -The breaking of bonds and the reforming of new bonds to create
new chemical compounds with different chemical forumulas and
different chemical properties. - -Chemical Reaction
-syntehesis, decomposition, combusion, single replacement,
double replacement - -Five main types of chemical reactions.
-Two elements combine to form a product. - -Syntehsis Reaction
-The breaking of a compound into component parts. - -
Decomposition Reaction
-The reaction of a compound or element with oxygen. In the
combusiton of a hydrocarbon carbon dioxide and water are
produced. - -Combustion Reaction
-Reaction involoving ionic compounds. The reactivity of the ionic
compounds determines whether the reaction will take place or
not. Can be single replacement or double replacement reaction. -
-Replacement Reactions
-Reaction between a more active metal reacting with an ionic
compound containing a less active metal to produce a new
compound ex. copper wire reacting with aqueous silver nitrate. -
-Single Replacement Reaction
Questions and Answers/ Verified.
Mixture with uniform density throughout and no distinguishable
coponents. - -Homogeneous Mixture
-Mixture in which the components are readily distinguished. - -
Heterogeneous Mixture
-A change in which the checmical composition of a substance
remains the same. - -Physical Change
-A change in which the chemical bonds are broken and reformed
to create a new and different substance. - -Chemical Change
-The simplest of substances and is represented by a specific
letter or combinations of letters. - -Element
-Combinations of eleements in whole number ratios. - -
Compounds
-Mass cannot be created or destroyed during a chemical reaction.
- -Law of Conservation of Mass
, -The breaking of bonds and the reforming of new bonds to create
new chemical compounds with different chemical forumulas and
different chemical properties. - -Chemical Reaction
-syntehesis, decomposition, combusion, single replacement,
double replacement - -Five main types of chemical reactions.
-Two elements combine to form a product. - -Syntehsis Reaction
-The breaking of a compound into component parts. - -
Decomposition Reaction
-The reaction of a compound or element with oxygen. In the
combusiton of a hydrocarbon carbon dioxide and water are
produced. - -Combustion Reaction
-Reaction involoving ionic compounds. The reactivity of the ionic
compounds determines whether the reaction will take place or
not. Can be single replacement or double replacement reaction. -
-Replacement Reactions
-Reaction between a more active metal reacting with an ionic
compound containing a less active metal to produce a new
compound ex. copper wire reacting with aqueous silver nitrate. -
-Single Replacement Reaction
