Chem final P1 2024 sem 1, 1-50

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 do you express 34567.01 in scientific notation with three significant figures?

Back

3.46 x 10^4

Front

What is density?

Back

Density is the mass of a substance divided by its volume, often expressed in grams per cubic centimeter (g/cm³).

Front

How do you order liquids from most dense to least dense?

Back

Arrange them based on their density values; the liquid with the highest density comes first.

Front

Define a liquid.

Back

A state of matter with a definite volume but no definite shape, taking the shape of its container.

Front

What is the difference between solids, liquids, and gases?

Back

Solids have a definite shape and volume, liquids have a definite volume but take the shape of their container, and gases have neither definite shape nor volume.

Front

What does the term 'plasma' refer to?

Back

A state of matter where gas is energized until atomic electrons are no longer associated with the nucleus.

Front

What are the characteristics of a solid?

Back

Solids have a definite shape, definite volume, and their molecules are tightly packed with little movement.

Front

What is the significance of significant figures in scientific notation?

Back

Significant figures indicate the precision of a measurement, ensuring that only the meaningful digits are represented.

Front

How can you identify a gas visually?

Back

Gases have no fixed shape or volume and will expand to fill their container.