Chemistry Midterm Review

How many grams are in 3.45 kilograms?

• 34.5 grams

• 345 grams

• 3450 grams

• .00345

Which of these is a chemical property?

• mass

• solubility

• melting point

• flammability

Which of the following is a pure substance?

• egg

• gold

• sea water

• bronze

A cube has a known volume of 21.0cm^3. A student uses a graduated cylinder and obtains measurements of 21.1, 20.9, and 21.2. Which of the following best fits the measurements of the student?

• precise

• accurate

• both

• neither

Which element has the biggest atomic radius?

• Hydrogen

• Francium

• Neon

• Flourine

Tags

NGSS.HS-PS1-1

Which state of matter has a definite volume but no definite shape?

• solid

• liquid

• gas

• none of the above

Which of the following describes filtration?

• The separation of a mixture's particles through the differences in partical size

• Transferring compounds from a solid or liquid into a different solvent

• Heating a liquid to create water vapor

• The particles left behind when water is evaporated

If you were to get a chemical in your eye in the lab, what should you do immediately?

• Flush the eye with a base

• Flush the eye with an acid

• Flush the eye with water

• Blink really fast for an extended period of time

Which scientist said that negatively charged electrons orbit a positive charged nucleus, much like the planets orbit the sun?

• Dalton

• Mendeleev

• Pauling

• Bohr

Having _____ valence electrons are considered to be stable.

• 1

• 6

• 8

• 0