Is a sign that alerts us to danger or hazards in our environment-

We must be careful when we use this substance because it catches fire easily-

These are chemicals that can explode in a lab and cause great damage to us-

These substances may cause your skin, eyes or nose to itch or become inflamed-

These substances can cause cancer-

This symbol indicates that the chemical is poisonous-

If we contaminate our hands or it gets into our mouth it can poison us and we may get very sick or even die-

The substances can burn our skin or even our clothes-

kilo means-

Mega means-

Giga means-

Centi means-

Milli means-

Micro means-

Nano means-

The unit used to measure Length-

The unit used to measure mass-

The unit used to measure Temperature-

The unit used to measure Time-

The unit used to measure Current-

Which of the following is not a safety rule?

The best instrument to measure the temperature of a room is:

The best instrument to measure the time is:

The best instrument to measure the your house width is:

The best instrument to weigh a heavy load:

The best instrument to measure the perimeter of a field is:

The laboratory is a place where scientific experiments are carried out.

The laboratory is contains special apparatus and instruments.

The laboratory is a working place where safety rules are followed-

Safety symbols alert us to dangerous substances or hazards in our environment. It is not important that we can identify them and understand what they mean.

When experiments are performed, a laboratory report can be written in any format.

To measure the distance between a highway, it is better to use a -

I can perform my own experiments with the lab material-

Keeping my area neat and clean is important because-

You should never _______chemicals in the lab.

At the end of the lab you see some leftover chemicals that looks just like the stuff you were using. You should-

Which of the following are examples of dressing appropriately in the lab-

You have been injured with a cut or a burn. First you should

Before leaving the lab you should always wash your hands.