Problem 62 - Chemistry Matter and Change

Question

Nutrition A food item contains 124 nutritional Calories. How many calories does the food item contain?

Step-by-Step Solution

Answer

The food item contains 124,000 calories.

Step 1: Identify the given information

We are given that a food item contains 124 nutritional Calories (Cals).

Step 2: Understand the conversion factor

1 nutritional Calorie (Cal) is equal to 1000 calories (cal).

Step 3: Convert nutritional Calories to calories

To convert 124 nutritional Calories to calories, multiply the number of nutritional Calories by the conversion factor (1000 calories/cal). 124 Cals * 1000 cal/Cal = 124,000 cal

Step 4: Write the final answer

The food item contains 124,000 calories.

Key Concepts

Nutritional Calorie

When you read a food label, you'll likely see energy listed in "Calories." But there's a little twist. These are actually "nutritional Calories," sometimes written as "Calories" with a capital "C." This is important! A nutritional Calorie is actually equivalent to 1,000 small "calories."

So, when you see "124 Calories" on your snack, it's like saying there are 124,000 small calories. Think of it as using bigger units to make things easier. It's a bit like using kilometers instead of meters for long distances.

Energy Conversion Factor

Understanding energy conversion is crucial in converting nutritional information. In nutritional science, the conversion factor between a nutritional Calorie and a small calorie is 1:1000.

This means that for every 1 nutritional Calorie (Cal), there are 1,000 small calories (cal). This is why you multiply by 1,000 when converting nutritional Calories to calories.

• 1 Cal = 1,000 cal

This conversion is essential for calculating energy accurately, whether you're reading food labels or measuring energy in scientific settings.

Calories in Food

The term "calories" in food labels refers to the energy your body gets from consuming it. Each macronutrient (carbohydrates, proteins, and fats) provides a different amount of energy, measured in calories.

• Carbohydrates and proteins offer roughly 4 Calories per gram.
• Fats provide about 9 Calories per gram.

This energy fuels everything you do, from singing in the shower to running a marathon. Reading how many calories are in your food helps you understand how much energy you consume. However, always remember, these are nutritional Calories, so apply the conversion if needed.

Nutritional Science

Nutritional science is the study of how food affects our bodies. It combines biology, chemistry, and other sciences to understand the nutrients we need and how they work.

Scientists look at macronutrients, like carbohydrates and proteins, and micronutrients, such as vitamins and minerals.

Research in nutritional science helps us know what to eat for better health and energy. It also plays a role in developing guidelines and food labels that you see every day. Understanding nutritional science can lead to making healthier choices and understanding those food labels a little better.