1. The liquid of life…

2.  Observe the following:  Substance 1 in water  Substance 2 in water  Substance 3 in water

3.  Observe the following:  Sugar in water- dissolves  Salt in water-dissolves  Food coloring in water-dissolves

4.  to make a solution of, as by mixing with a liquid  Ex: table salt (NaCl)

5.  Water’s ability to dissolve other chemicals is one of the most important properties  When a material dissolves into tiny pieces, it can move more easily from cell to cell

6.  Carbohydrates, fats, and proteins  Carbohydrates: are sugars and starches.  Sugars are used to sweeten foods and drinks; fruits and vegetables also contain sugar  Starches are found in foods such as bread and rice  Plants use the energy from sunlight to make carbohydrates from carbon dioxide and water  Carbohydrates are like fuel for your body –they provide energy

7.  Fats are also fuel chemicals.  They store larger amounts of energy that are released when they are broken down  Fats are found in meats, butter, and cheese.  Fats are related to oil

8.  Proteins are another type of chemical needed for life  Meats such as beef and chicken contain large amounts of protein  Like fats and carbs, proteins also provide energy to living things  Proteins help control body activities, like hear rate  Proteins are the basic part of human cells

9.  Protein chains fold into a particular shape to carry out a particular function  Proteins with different shapes carry out different functions  If a protein twists into the wrong shape or has a missing part, it may not be able to do its job.  DNA (deoxyribonucleic acid) contains the code that’s needed to produce protein.  The code is carried out by RNA

10.  Your body must get a regular supply of fats, proteins, and carbohydrates from the food that you eat in order to function properly  In addition to these chemicals, your body also needs minerals and vitamins.  Minerals are natural substances that your body needs to work properly  Vitamins are used in your body for growth and activity  Nutrients are chemicals that come from foods that are needed for life