Sem 1 Chemistry Review

Front

What does a bullseye with Low Accuracy & High Precision indicate?

Back

It indicates that the measurements are clustered closely together but not near the target value.

Front

Define a Pure Substance.

Back

A Pure Substance is a material made up of only one type of atom (element) or compound, having a uniform and definite composition.

Front

What equipment is used to drop a small amount of liquid?

Back

A dropper is used to dispense small amounts of liquid.

Front

Is it safe to leave a lit burner unattended?

Back

No, it is not safe; you should never leave a lit burner unattended.

Front

What is the function of a funnel in a laboratory?

Back

A funnel is used to transfer liquids or fine-grained materials into containers with small openings and is also used for filtration.

Front

What is the difference between a heterogeneous mixture and a homogeneous mixture?

Back

A heterogeneous mixture has a non-uniform composition, while a homogeneous mixture has a uniform composition throughout.

Front

What is the purpose of a graduated cylinder?

Back

A graduated cylinder is used to measure the volume of liquids accurately.

Front

What safety equipment should be worn during a chemistry experiment?

Back

Safety goggles, gloves, and a lab coat should be worn to protect against chemical spills and splashes.

Front

What is the definition of a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.

Front

What is the significance of the pH scale in chemistry?

Back

The pH scale measures the acidity or basicity of a solution, ranging from 0 (acidic) to 14 (basic), with 7 being neutral.