During an indoor science investigation, students mix unknown substances to determine which substances are soluble in water. Which safety procedure shoud the students follow?
A Observe the outdoor area for any possible dangers
B Wash their hands before working with substances
C Wear safety goggles and gloves when working with substances
D Complete the investigation before the teacher instructs them to do so
Which tool can be used to compare the mass of a large rock to the mass of two wooden blocks?
A Graduated cylinder
B Thermometer
C Spring scale
D Pan balance
After performing a lab investigation about solubility, which of these procedures is an appropriate choice for conserving resources?
A Throw dirty beakers in the trash after completing the investigation
B Wash and store beakers for future use
C Save any unused food products to eat during lunch
D Leave all lab materials for other group members to put away
A student conducts an investigation on mixturs using water, sand, and gravel. While stirring the mixture into the container of water, the sand and water mixture accidentally splashes into the student's eyes. What safety precaution should the student have followed?
A Wash hands before investigating
B Wait for the other students before starting the investigation
C Wear safety goggles
D Use a spoon to stir the mixture
Which tool is used to measure the property of tempertature?