reactions_in_our_world_report19

Reactions in Our World Instructions: Complete each section of this report and answer all questions in complete sentences for full credit. Review Questions 1. Write a statement to explain the basic differences between a chemical reaction and a nuclear reaction. When a chemical reaction occurs, the electrons are arranged, that is, they are regrouped and there is no change in the nucleus. In nuclear reactions, the atom in the nucleus changes and usually a different element is produced. How might the physical characteristics of a reaction help determine the type of reaction happening? While observing a chemical reaction, it is possible identify the type of reaction that’s occurring through the observation of physical properties.These properties consist of the emission of light or heat, the creation of gas, the transformation of color, and the occurrence of precipitation. For example, the release of gas during a reaction might indicate that the reaction is either a combustion or decomposition reaction. Furthermore, reactions that produce precipitation could be classified as double displacement reactions. Part One As you follow along with each demonstration, pay attention to changes that are happening. The unbalanced reaction is in your data table. This will help you follow along with each reactant. Pay attention to the state of each reactant: solid (s), liquid (l), gas (g), or aqueous solution (aq). Complete the table by including the following:  A balanced chemical reaction  The physical and chemical properties and changes you observe during the reaction  The reaction type (single replacement, double replacement, synthesis, decomposition, redox, or combustion) The first one is done for you as a model. Notice you can have more than one reaction type. Chemical Reaction Observations Reaction Type Iron and copper (II) sulfate Fe + CuSO 4 (aq) → Fe 2 (SO 4 ) 3 (aq) + Cu(s) The gray solid changes from gray to a gold color. Single Replacement, Redox Unless Otherwise Noted All Content © 2022 Florida Virtual School. FlexPoint Education Cloud™ is a trademark of Florida Virtual School.

Balanced Reaction? 2 Fe + 3 CuSO 4 (aq) → Fe 2 (SO 4 ) 3 (aq) + 3 Cu(s) Lead (II) nitrate and potassium iodide Pb(NO 3 ) 2 (aq) + KI(aq) → KNO 3 (aq) + PbI 2 (s) Balanced Reaction? Pb(NO 3 ) 2 (aq) + KI(aq) → KNO 3 (aq) + PbI 2 (s) The yellow liquid remains at the bottom of the test tube, the clear liquid does not mix with the yellow liquid. double replacement reaction Magnesium metal and hydrochloric acid Mg(s) + HCl(aq) → MgCl 2 (aq) + H 2 (g) Balanced Reaction? Mg(s) + HCl(aq) → MgCl 2 (aq) + H 2 (g) Bubbles started to form around the magnesium Single Replacement reaction Electrolysis of water H 2 O(l) → H 2 (g) + O 2 (g) Balanced Reaction? H 2 O(l) → H 2 (g) + O 2 (g) small bubbles were formed around the H2, and thenH2 began to separate into the water descomposition Burning magnesium Mg(s) + O 2 (g) → MgO(s) Balanced Reaction? Mg(s) + O 2 (g) → MgO(s) Magnesium caused orange and white flames redox, combustion Part Two Four nuclear reactions are given and the observation from the reaction. Determine the type of nuclear reaction (fission or fusion). While there is no visual lab to accompany this, all equations are listed for you. Nuclear Reaction Observations Reaction Type n 0 1 + U 92 235 → Kr 36 89 + Ba 56 144 + 3 n 0 1 Huge explosion fission H 1 2 + H 1 3 → He 2 4 + n 0 1 No visible reaction fusion He 2 4 + Li 3 7 → B 5 10 + n 0 1 No visible reaction fusion n 0 1 + Pu 94 239 → Zr 40 103 + Xe 54 134 + 3 n 0 1 Huge explosion fission Unless Otherwise Noted All Content © 2022 Florida Virtual School. FlexPoint Education Cloud™ is a trademark of Florida Virtual School.

be used in chemical agriculture such as the production of pesticides and fertilizers and also in pharmaceutical products and food. Unless Otherwise Noted All Content © 2022 Florida Virtual School. FlexPoint Education Cloud™ is a trademark of Florida Virtual School.