To express the measurement 0.0056 grams in scientific notation, you follow a simple process. First, identify the significant digits in the number. In this case, the significant digits are 5 and 6.
Next, you need to move the decimal point in the number to the right until only one non-zero digit is to the left of the decimal. For 0.0056, you would move the decimal point three places to the right, which gives you 5.6.
This movement of the decimal point corresponds to a negative exponent because you are effectively dividing by a power of 10. Since we moved the decimal three places to the right, we represent this as 10 raised to the power of -3.
Putting it all together, we can express 0.0056 grams in scientific notation as:
5.6 × 10-3 grams