Q1 Test Review

According to lab safety, what should you do if you have long hair? Mark only one oval.

• Leave it down

• Tie it up

• Tuck it in your shirt

Answer explanation

In lab safety, tying up long hair is essential to prevent it from getting caught in equipment or coming into contact with hazardous materials. Therefore, the correct action is to tie it up.

If you break a piece of glassware in the chemistry lab, what should you do? Mark only one oval.

• Clean it up

• Leave it

• Tell your teacher

Answer explanation

If you break glassware in the lab, you should tell your teacher immediately. They are trained to handle such situations safely and can ensure proper cleanup to prevent injuries.

You are allowed to wear sandals in the lab where your toes are showing. Mark only one oval.

• True

• False

Answer explanation

Wearing sandals that expose your toes is generally not allowed in labs due to safety regulations. Therefore, the correct answer is False.

You can wear an apron or lab coat if you want to protect your clothing. Mark only one oval.

• True

• False

Answer explanation

True. Wearing an apron or lab coat is a common practice to protect your clothing from spills and stains, making it a suitable choice for maintaining cleanliness in various settings.

What is this piece of glassware called? Mark only one oval.

• Beaker

• Erlenmeyer Flask

• Graduated Cylinder

• Pipette

Answer explanation

The correct answer is 'Erlenmeyer Flask' because it is a type of glassware characterized by its conical shape and narrow neck, commonly used in laboratories for mixing and heating liquids.

What is this piece of glassware called? Mark only one oval.

• Beaker

• Erlenmeyer Flask

• Graduated Cylinder

• Pipette

Answer explanation

A graduated cylinder is used for measuring the volume of liquids accurately. Unlike a beaker or Erlenmeyer flask, it has markings for precise measurements, making it the correct choice for this piece of glassware.

What is this piece of glassware called? Mark only one oval.

• Beaker

• Erlenmeyer Flask

• Graduated Cylinder

• Pipette

Answer explanation

A beaker is a common piece of glassware used for mixing, heating, and measuring liquids. It has a cylindrical shape and a spout for pouring, distinguishing it from other glassware like flasks and graduated cylinders.

You should NEVER what in the lab? Mark only one oval.

• touch chemicals

• taste chemicals

• drink beverages

• smell chemicals

• eat food

Answer explanation

You should NEVER taste chemicals in the lab as they can be toxic or harmful. Unlike touching or smelling, tasting poses a direct risk to your health, making it the most dangerous action among the options.

Which is not a safety feature in a chemistry lab? Mark only one oval.

• sink

• safety shower

• fire extinguisher

• trash bin

• eye wash station

Answer explanation

The trash bin is not a safety feature in a chemistry lab. It is used for waste disposal, while the sink, safety shower, fire extinguisher, and eye wash station are essential for safety and emergency response.

The variable that stays the same throughout a lab is called the what? Mark only one oval.

• independent variable

• dependent variable

• control

• constants

Answer explanation

The variable that stays the same throughout a lab is called the constants. Constants are essential for ensuring that the experiment is fair and that any changes in the results can be attributed to the independent variable.