CHEMISTRY 1 END OF SEMESTER EXAMINATION MANNING HIGH SCHOOL P1

The first step in the scientific method

• Question

• Hypothesis

• Observation

• Experimentation

What is a dependent variable?

• The factor changed on purpose to test the hypothesis

• The factor which doesn't change during the experiment

• The factor which responses to the change in another factor

• The factor on which other factors depend

Why might a scientist reject a scientific theory?

• New evidence shows it to be false

• The topic is too strange

• Someone disagrees with it

• He wants to prove it wrong

This instrument is used for

• Measuring mass

• Measuring temperature

• Measuring volume

• Measuring distance

Name this laboratory instrument

• Erlenmeyer flask

• Volumetric flask

• Round bottom flask

• Flat bottom flask

If a fire erupts, immediately

• notify the teacher

• throw water on the fire

• run into the storage closet.

• open the window

If you wash your hands with soapy water and rinse with plenty of clean water, you may feel free to eat in the chemistry laboratory.

• True

• False

What phase change is occurring when solid air refresher kept in your car gradually reduces in size?

• Melting

• Evaporation

• Sublimation

• Deposition

Without using air conditioner or heater in your car on a cold day, you notice that the inner surfaces of your windshield and windows become cloudy as mist of water droplets form on the surface. The process occuring on the cold surfaces is.......

• Melting

• Deposition

• Evaporation

• Condensation

This phase change is exothermic

• Freezing

• Sublimation

• Melting

• Boiling