Summative Test in Grade 10 Science

Summative Test in Grade 10 Science  Name:___________________________________  Name:______________________________ _____ Score: __________________   Name of Teacher: Teacher: _________________________ Section:_________________  Instruction: Wr Write ite the letter of the correct answer before the number.  _________ 1. Chemical reactions _______________. A. Occur only in living things C. create and destroy atoms . !roduce new substances ". only occur outside living organisms

 _________ 2. What are the coefficient coefficientss that will balance balance the s#eleton s#eleton e$uation% e$uation% AlCl AlCl & NaO' Al(O') Al(O')  NaCl A . * +, +* + , . ,+*+,+* C. *+*+*+, ". *+,+,+*  _________ 3. -n every balanced chemical e$uation+ each side of the e$uation has the same number of ________. A. Atoms in each element . molecules C. moles ". coefficients  _________ 4. Which molecules are most closely related to liids% A. nucleotides . fatty acids C. amino acids ". sugars  _________ 5. Which of the following molecules are classified as carbohydrates% A. nucleotides . fatty acids C. amino acids ". sugars  _________ 6. !olysaccharides are __________. A. liids . carbohydrates C. roteins ". nucleic acids  _________ 7. Which molecules are most closely related to roteins% A. nucleotides . fatty acids C. amino acids ". sugars  _________ 8. Which of the following is not an e/amle of matter% A. Ai Air . heat C. smo#e ". water vaor    _________ 9. When the e$uation 0e & Cl1 0eCl, is balanced+ what is the coefficient for Cl1 % A. * . 1 C. , ". 2  _________ 10 10. What are the missing coefficients for the s#eleton e$uation below% Al1 (SO2 ), (a$) 3O'(a$) Al(O'), (a$) 31 SO2 (a$) A . * +, +1 + , . 1+*1+2+4 C. 2+4+1+, ". *+4+1+, 11. The e$uation above is an e/amle of what tye of chemical reaction%  _________ 11 A. combination . decomosition C. single dislacement ". double dislacement  _________ 12 12. The tye of reaction that ta#es lace when one element reacts with a comound to form a new comound and a different element is a _______ reaction. A. combination . decomosition C. single dislacement ". double dislacement  _________ 13 13. Which of the following is a balanced e$uation reresenting the decomosition of lead(-5) o/ide% A. !bO C. !b O !b 1O 1!b O . !bO ". !bO !b O !b O 14. oyle6s law states that ____.  _________ 14 A. the volume volume of a gas gas varies varies inversely inversely with ressur ressuree . the volume volume of a gas gas varies varies directly directly with with ressur ressuree C. the temeratu temerature re of a gas varies varies inverse inversely ly with ressur ressuree ". the temeratu temerature re of a gas varies varies directly directly with ressur ressuree  _________ 15 15. Charles6s law states that ____. A. the ressure ressure of a gas is inversely roort roortional ional to its temeratu temerature re in #elvins . the volume volume of a gas is directly directly roortion roortional al to its temeratu temerature re in #elvins #elvins C. the ressure ressure of a gas is directly directly roorti roortional onal to its temerat temerature ure in #elvins #elvins ". the volume volume of a gas is inversely inversely roorti roortional onal to its temerat temerature ure in #elvins #elvins 16. As the temerature of a fi/ed volume of a gas increases+ the ressure will ____.  _________ 16 A. 5ary inversely . decrease C. not change ". increase 17. A chemical reaction is a rocess in which 7  _________ 17 A. roducts change into reactants C. substances change state . the law of conservation of mass alies ". all of these  _________ 18 18. "uring a chemical reaction7 A. new elements are roduced C. atoms are destroyed . atoms are rearranged ". elements are destroyed  _________ 19 19. An e$uation is balanced by7 A. changing subscrits C . erasing elements as necessary . adding coefficients ". adding elements as necessary

 _________ 20. What are the reactants in the following chemical e$uation: 8n & CuSO2 99999 8nSO2 & Cu A. ;inc and coer C. ;inc and coer (--) sulfate . ;inc sulfate and coer ". only ;inc  _________ 21. What are the roducts in the above e$uation% A. ;inc and coer C. ;inc and coer (--) sulfate . ;inc sulfate and coer ". only ;inc  _________ 22. oyleussacaw is ______________. A. 51!1T* ? 51!1T* C. 5*!*T1 ? 5*!1T* . 51!*T* ?5*!1T1 ". 5*!*T1 ? 51!1T* Part II. Write the chemica e!uation  for the following chemical reactions. "etermine the t"#e o$ reaction  it undergoes. (, ts each) *. 'ydrogen ero/ide ('1O1) in the resence of manganese dio/ide (@nO1) roduces water ('1O) and o/ygen gas (O1).

1. @agnesium chloride (@gCl1) is the roduct of a reaction between magnesium (@g) and chlorine (Cl1).

Part III% &aance  the following chemical reactions. (, ts each) *.

1.

,.

8n &

'1SO2 99999

'1CO, 99999

CaCO,

&

8nSO2 &

CO1

'1

&

'1O

'Cl 999999

CaCl1

& '1CO,