Hesi A2 Chemistry QUESTIONS & ANSWERS 2024 ( A+ GRADED
100% VERIFIED)
1. Mixture with uniform density throughout and no distinguishable coponents.:
Homogeneous Mixture
2. Mixture in which the components are readily distinguished.: Heterogeneous
Mixture
3. A change in which the checmical composition of a substance remains the same.:
Physical Change
4. A change in which the chemical bonds are broken and reformed to create a new
and different substance.: Chemical Change
5. The simplest of substances and is represented by a specific letter or
combinations of letters.: Element
6. Combinations of eleements in whole number ratios.: Compounds
7. Mass cannot be created or destroyed during a chemical reaction.: Law of
Conservation of Mass
8. 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
9. syntehesis, decomposition, combusion, single replacement, double replacement:
Five main types of chemical reactions.
10. Two elements combine to form a product.: Syntehsis Reaction
11. The breaking of a compound into component parts.: Decomposition Reaction
12. The reaction of a compound or element with oxygen. In the combusiton of a
hydrocarbon carbon dioxide and water are produced.: Combustion Reaction
13. 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
14. 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
15. Reaction involving two ionic compounds where the positive ion from one
compound combines with the negative ion of the other compound. The result it
two new ionic compounds that have switches partners.: Double Replacement
Reaction
16. The number of protons in a given element.: Atomic Number
100% VERIFIED)
1. Mixture with uniform density throughout and no distinguishable coponents.:
Homogeneous Mixture
2. Mixture in which the components are readily distinguished.: Heterogeneous
Mixture
3. A change in which the checmical composition of a substance remains the same.:
Physical Change
4. A change in which the chemical bonds are broken and reformed to create a new
and different substance.: Chemical Change
5. The simplest of substances and is represented by a specific letter or
combinations of letters.: Element
6. Combinations of eleements in whole number ratios.: Compounds
7. Mass cannot be created or destroyed during a chemical reaction.: Law of
Conservation of Mass
8. 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
9. syntehesis, decomposition, combusion, single replacement, double replacement:
Five main types of chemical reactions.
10. Two elements combine to form a product.: Syntehsis Reaction
11. The breaking of a compound into component parts.: Decomposition Reaction
12. The reaction of a compound or element with oxygen. In the combusiton of a
hydrocarbon carbon dioxide and water are produced.: Combustion Reaction
13. 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
14. 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
15. Reaction involving two ionic compounds where the positive ion from one
compound combines with the negative ion of the other compound. The result it
two new ionic compounds that have switches partners.: Double Replacement
Reaction
16. The number of protons in a given element.: Atomic Number
