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- 1. Multiple Choice
Which of the following subatomic particles is found in the nucleus of an atom and does not have a positive or negative charge?
Electron
Proton
Neutron
Molecule
- 2. Multiple Choice
Which of the following Elements have similar chemical properties based on their position on the Periodic Table?
Carbon, C and Nitrogen, N
Sulfur, S and Chlorine, Cl
Sodium, Na and Potassium, K
Barium, Ba and Bromine, Br
- 3. Multiple Choice
When comparing metals, metalloids, and nonmetals, which of the following set of properties would best describe nonmetals?
Shiny, semiconductors, and malleable
Shiny, ductile, and brittle
Dull, poor conductors, and brittle
Dull, semiconductors, and ductile
- 4. Multiple Choice
Look at the Chemical reaction below
6CO2 + 6H2O + Light energy → C6H12O6 + 6O2
Which statement is true?
There are 2 total Carbon atoms
There are 3 total Oxygen atoms
There are 18 total Oxygen atoms
There are 29 total Hydrogen atoms
- 5. Multiple Choice
The teacher cut a 5 cm piece of Magnesium and placed it in a test tube containing Hydrochloric acid. Students observed bubbles and a cloudy, white vapor rising up from the Magnesium ribbon. Which of the following is not evidence that a chemical reaction occurred between the Magnesium and Hydrochloric acid?
A cloudy, white vapor was formed.
The students observed bubbles
The magnesium was cut into a 5 cm piece
A new substance with different properties was formed.
- 6. Multiple Choice
The table shows the density of different known substances. A student measured the volume of a piece of aluminum using water displacement. The volume was 3.0 cm3. Using the volume and density measurements, calculate the mass in grams of aluminum in the student's sample.
0.9 g/cm3
2.97 g/cm3
33.9 g/cm3
8.1 g/cm3
- 7. Multiple Choice
Which element is represented by this model?
Carbon, C
Boron, B
Nitrogen, N
Sodium, Na
- 8. Multiple Choice
Based on the Periodic Table, which of the following statements is true?
Cobalt and Nickel are in period 3 so they each have three energy levels.
Krypton and Xenon have a full outer shell of electrons.
Cesium has two more protons than Barium.
Nitrogen and Oxygen have similar chemical properties.
- 9. Multiple Choice
The table shows the different combination of elements in compounds. Which of the following statements is true?
Chemical formulas are used to identify the number of atoms of each element present in a compound.
The chemical formulas of Ethane and Propane are the same because each contains Carbon and Hydrogen.
Chemical formula names are determined by the number of Hydrogen atoms present in the formula.
Chemical formulas that contain subscripts are the only chemical formulas that are actual compounds.
- 10. Multiple Choice
Which of the following group of elements on the Periodic Table is the least reactive?
Alkali metals
Alkaline Earth metals
Halogens
Noble gases
- 11. Multiple Choice
The mass of an unidentified rock is 15.5 grams. Students determine the volume of the rock by placing the rock in a cylinder with water. They determine the identity of the rock based on the density ranges in the table. The students most likely have which type of rock?
Coal
Dolomite
Peridotite
Sandstone
- 12. Multiple Choice
The mass of an unidentified rock is 6 grams. Students determine the volume of the rock by placing the rock in a cylinder with water. The students determine the identity of the rock based on the density ranges in the table. The students most likely have which type of rock?
Coal
Dolomite
Peridotite
Sandstone
- 13. Multiple Choice
A compound secreted by honeybees to paralyze intruders in their hive is known as 2-heptanone. The formula for this compound is shown.
CH3C4H8COCH3
How many atoms of each element are in one molecule of 2-heptanone?
4 Carbon atoms, 11 Hydrogen atoms, and 1 Oxygen atom
7 Carbon atoms, 14 Hydrogen atoms, and 1 Oxygen atom
7 Carbon atoms, 11 Hydrogen atoms, and 8 Oxygen atoms
6 Carbon atoms, 14 Hydrogen atoms, and 3 Oxygen atoms
- 14. Multiple Choice
The atomic number of Krypton is 36. If the mass number of a Krypton atom is 84, which table shows the number of subatomic particles inside and outside the nucleus of the Krypton atom?
A
B
C
D
- 15. Multiple Choice
A scientist performs tests on a sample of an element. The element is a shiny solid that conducts electricity and heat. The scientist is able to bend and flatten the sample when pressure is applied to it. Based on this information, the element could NOT be a member of which group on the Periodic Table?
Group 2
Group 18
Group 12
Group 1
- 16. Multiple Choice
Which statement best describes evidence that a chemical reaction occurs as a cake bakes?
The water in the cake batter evaporates
The cake rises as gas bubbles form in the baking cake
The cake takes the shape of the container in which it is baked
The water in the cake batter is used to keep the cake moist as it bakes
- 17. Multiple Choice
How many more Oxygen atoms are represented in the formula of Aluminum Sulfate, Al2(SO4)3 than in the formula for Barium Hydroxide, Ba(OH)2?
2
3
5
10
- 18. Multiple Choice
The diagram shows a model of an atom. The model has four different symbols on it. Each symbol represents a different role for one of the particles within the atom. In this model, which particle determines the reactivity of this atom?
Particle W
Particle X
Particle Y
Particle Z
- 19. Multiple Choice
Researchers are investigating processes that happen during digestion. Which answer choice describes only a physical change during digestion?
Hydrochloric acid in the stomach breaks down proteins.
Chewing in the mouth breaks food into small pieces.
Enzymes in saliva start the digestion of starches before food is swallowed.
Bacteria in the intestines convert dietary fiber into fats.
- 20. Multiple Choice
Atoms of which two elements have a combined total of 32 protons
Magnesium and Sodium
Copper and Boron
Zinc and Carbon
None of these
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