Chemistry Sem 1 review part 1

Front

What is scientific notation?

Back

A way of expressing numbers that are too large or too small to be conveniently written in decimal form, using powers of ten.

Front

How is the number 0.0000535 represented in scientific notation?

Back

5.35 x 10^-5

Front

What happens to the exponent when you move the decimal to the left in scientific notation?

Back

The exponent becomes positive.

Front

What happens to the exponent when you move the decimal to the right in scientific notation?

Back

The exponent becomes negative.

Front

Are zeroes between nonzero digits considered significant?

Back

Yes, they are always considered significant.

Front

What does the metric prefix 'deci' mean?

Back

It means one-tenth (1/10).

Front

What is the mass of an apple that weighs 1.2 hectograms in grams?

Back

120 grams.

Front

What is the significance of significant figures in measurements?

Back

They indicate the precision of a measurement.

Front

What is the metric prefix for one thousand?

Back

Kilo.

Front

How do you convert grams to hectograms?

Back

Divide the number of grams by 100.