In a household wire how far does the electric current travel each second?

Electrons can move between orbital shells but not between atoms.

What is happening when two objects rub against each other and transfer electrons?

Object A has 24 protons and 28 electrons. Object B has 24 protons and 26 electrons. Which object is positively electrified?

 4.1 CASE STUDY Mr. and Mrs. Brown prepare vetkoek every working day. They fry and sell it where people can buy it on their way to work. Tip – They are lacking some marketing aspects.     

  QUESTION 4     Answer all the questions below.   

1.1 Mould multiplies rapidly on the following kinds of food: (1)

2.5.2 Identify and discuss TWO conditions from the scenario that was ideal for pathogen development. (2×2)          (4)

2.1  Read the following case study and answer the questions that follow. Sue is 16 years old. She is worried about her diet, she is feeling tired and is getting ill often. The list below details everything that she consumes on an average day.   MEAL FOOD ITEM PORTIONS Breakfast: Oats 1portion Milk 1 portion Honey 1 portion Morning snack:   Salt and vinegar crisps 2 portions Lunch:       Toasted sandwich (white bread) 2 portions Cheese 3 portions Ham 2 portions Chutney 1 portion Afternoon snack:   Apple 1 portion Caramel 2 portions Dinner:       Pasta 1 portion Chicken 1 portion Cream 1 portion Canned tomato 1 portion After dinner: Ice cream 2 portions

1.7 When evaluating restaurants, it is important to analyse the following: (1)