Everything Science Grade 10

CHAPTER 13. PHYSICAL AND CHEMICAL CHANGE 13.3 conserved. For each reaction give the total molecular mass of the reactants and th ...

13.3 CHAPTER 13. PHYSICAL AND CHEMICAL CHANGE a water molecule, we see that94%of the mass of a water molecule is accounted for b ...

CHAPTER 13. PHYSICAL AND CHEMICAL CHANGE 13.3 will remain in the final solution, together with the products formed. Volume relat ...

13.3 CHAPTER 13. PHYSICAL AND CHEMICAL CHANGE molecules is not always the same. Chemical reactions involve large changes in ene ...

CHAPTER 13. PHYSICAL AND CHEMICAL CHANGE 13.3 a.(NH 4 ) 2 CO 3 →NH 3 +CO 2 +H 2 O b. N 2 (g) + 3H 2 (g)→ 2 NH 3 (g) c. CaCO 3 →C ...

CHAPTER 14. REPRESENTING CHEMICAL CHANGE Representing chemical change 14 Introduction ESADY As we have already mentioned, a numb ...

CHAPTER 14. REPRESENTING CHEMICAL CHANGE 14.1 Chemical symbols ESADZ It is very important to know the chemical symbols for commo ...

14.2 CHAPTER 14. REPRESENTING CHEMICAL CHANGE Exercise 14 - 1 1. Write down the chemical formula for each of the following compo ...

CHAPTER 14. REPRESENTING CHEMICAL CHANGE 14.2 DEFINITION: The law of conservation of mass The mass of a closed system of substan ...

14.2 CHAPTER 14. REPRESENTING CHEMICAL CHANGE have the same number of each colour on both sides? If not, the equation is not bal ...

CHAPTER 14. REPRESENTING CHEMICAL CHANGE 14.2 Step 1: Identify the reactants and the products in the reaction and write their ch ...

14.2 CHAPTER 14. REPRESENTING CHEMICAL CHANGE Mg+ 2HCl→MgCl 2 +H 2 Step 5:Check that the atoms are balanced If we count the atom ...

CHAPTER 14. REPRESENTING CHEMICAL CHANGE 14.2 Products: C= 1;H= 4;O= 4 You will see that, although the number ofhydrogenatoms no ...

14.2 CHAPTER 14. REPRESENTING CHEMICAL CHANGE Products: C= 6;H= 2;O= 13 Step 5:Change the coefficients again to try to balance t ...

CHAPTER 14. REPRESENTING CHEMICAL CHANGE 14.2 More practice video solutions or help at http://www.everythingscience.co.za (1.) 0 ...

14.2 CHAPTER 14. REPRESENTING CHEMICAL CHANGE Step 2:Write the equation Zn+HCl→ZnCl 2 +H 2 Step 3:Balance the equation You will ...

CHAPTER 14. REPRESENTING CHEMICAL CHANGE 14.2 (1.) 00b7 (2.) 00b8 (3.) 00b9 (4.) 00ba General experiment: The relationship betwe ...

14.2 CHAPTER 14. REPRESENTING CHEMICAL CHANGE Chapter 14 | Summary See the summary presentation ( Presentation: VPeca at http:// ...

CHAPTER 14. REPRESENTING CHEMICAL CHANGE 14.2 a. Complete the diagrams by drawing ball-and-stick models of the prod- ucts. b. Wr ...

14.2 CHAPTER 14. REPRESENTING CHEMICAL CHANGE (1.) 005s (2.) 005t (3.) 005u (4.) 005v (5.) 005w (6.) 005x (7.) 005y 244 Chemistr ...