Middle School Chemistry Mid Term

Middle School Chemistry Mid Term

10th - 12th Grade

84 Qs

quiz-placeholder

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Middle School Chemistry Mid Term

Middle School Chemistry Mid Term

Assessment

Quiz

Chemistry

10th - 12th Grade

Hard

NGSS
HS-PS1-1, HS-PS1-2, MS-PS1-1

+13

Standards-aligned

Created by

Charles Martinez

FREE Resource

84 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A research scientist at a pharmaceutical company discovers one of the company’s products currently on the market could cause severe side effects and even death in a very small percentage of people. Which of the following BEST describes the action the scientist should take?
   Pull the product from the market immediately but not inform those already using the product of the risks because no person has yet developed any of the side effects.
 Pull the product from the market immediately and inform the public and those currently taking the product of the possible side effects and risk of death.
     Continue to improve the product to eliminate the risks.
Because the product is benefiting a large number of people, and the risk of side effects is very small, the information should be kept private in order to avoid possible public panic.

Tags

NGSS.HS-ETS1-3

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Use this experiment for questions 1 and 2.Dan has three identical containers. He cuts a circular hole in the center of the bottom of each container and places a plug in each hole. The diameters of the three holes are 10 cm, 20 cm, and 30 cm. He fills the first container with water, removes the plug, and measures and records the amount of time it takes for the water to drain completely out of the container. He repeats this process for the other two containers.Identify the question that Dan is MOST likely trying to answer using the experiment.
Does the size of a hole affect the drainage rate of a container?
Does the type of container affect the way water drains out of the bottom?
How fast does water drain out of three containers?
Which container holds the greatest amount of water?

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 As you are heating a beaker of an unknown substance, your instructor asks if the substance is giving off an odor. Which procedure should you follow to safely determine if the substance has an odor?
 Pick up the beaker and let your lab partner smell it.
Put on your safety goggles and place your nose over the beaker.
  Turn off the heat source and sit for 10 minutes.
Wave the fumes from the beaker toward your nose.

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 Which of the following is NOT a part of Dalton’s atomic theory?
All elements are composed of atoms.
 Atoms of the same element are alike.
  Atoms are always in motion.
 Atoms that combine do so in simple whole-number ratios.

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

 Robert A. Millikan contributed to the current atomic theory by discovering which of the following? I.  electron charge II.  the electron III.  the mass of an electron
   I and II
     II and III
 I and III
   I, II, and III

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Bohr’s contribution to the development of atomic structure
   was referred to as the “plum pudding model.”
   was the discovery that electrons surround a dense nucleus.
   proposed that electrons travel in circular orbits around the nucleus.
 is the quantum mechanical model.

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What is the total number of subatomic particles (protons, electrons, and neutrons) in an atom of vanadium-51?
51
74
102
125

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