Quarter 1 Exam 7th

When an activity is over in the lab, what should you do?

• cover your face with your hands

• wash your hands thoroughly with soap and water before leaving the lab

• put on your safety goggles

• leave hot plates switched on

What kind of safety equipment is used to protect your eyes?

• fire extinguisher

• apron

• fire blanket

• goggles

Glassware in the lab is chipped or broken, you should

• use it only for solid materials

• give it to your teacher for recycling or disposal

• put it back into the storage cabinet

• increase the damage so that it is obvious

when any chemicals are used during a lab activity the first thing you should do is

• ask your friend if you can touch things

• put gloves on your hands

• give directions to your friends

• make sure you take pictures

lab equipment that is made of glass or plastic and used to measure a liquid's volume?

• beaker

• test tube

• flask

• graduated cylinder

measures the mass of a substance electronically?

• balance beam

• electronic scale

• crucible

• hot plate

injured in the laboratory (cut, burned, etc.)? the first thing you should do is

• see a doctor after school

• tell the teacher at once

• visit the school nurse after class

• apply first aid yourself

what do you do with unused chemicals after a lab?

• put them back into their original container

• dispose of them according to your teacher’s instructions

• mix them all together in a bucket

• pour them down a sink or drain

Tags

NGSS.MS-ESS3-3

equipment used to guide liquids and powders through a small opening?

• weigh boat

• test tube

• funnel

• flask

Horseplay, practical jokes, or pranks in the classroom are

• always against the rules.

• okay.

• not dangerous.

• okay if you are working alone.