PSc Review Day 2

Use the following Bohr model to answer the question: Which of the following is represented by the above Bohr Model?

• Sodium

• Neon

• Potassium

• Aluminum

Tags

NGSS.MS-PS1-1

The elements fluorine (F), chlorine (Cl), and iodine (I) are all in the same column on the periodic table of elements. Which is the BEST explanation for this arrangement?

• They are all gases at room temperature

• They were all discovered in ancient times

• They have the same number of energy levels

• They have the same number of valence electrons

What is the difference between electron dot diagrams and Bohr models?

• Electron dot diagrams show the mass number of an atom and Bohr models show the atomic number

• Electron dot diagrams show only the valence electrons and Bohr models show all of the shells

• Electron dot diagrams show protons and Bohr models show electrons

• Electron dot diagrams show all of the shells and Bohr models show only valence electrons

Which of the following is the correct electron dot diagram for an oxygen atom?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

How will the liquids be arranged from bottom to top in the beaker?

• Milk, Water, Oil, Ethanol

• Milk, Water, Ethanol, Oil

• Water, Milk, Oil, Ethanol

• Water, Oil, Ethanol, Milk

How does a piece of paper’s ability to be folded in half compare to its ability to burn?

• Its ability to be folded is a physical property, while its ability to burn is a chemical property

• Its ability to be folded is a chemical property, while its ability to burn is a physical property

• Both are physical properties of the piece of paper

• Both are chemical properties of the piece of paper

A student observes a substance that is highly reflective and able to conduct electricity. This substance also has a high melting point. Which is the MOST likely classification for this substance?

• Salt

• Glass

• Metal

• Plastic

The elements fluorine (F), chlorine (Cl), and Iodine (I) are all in the same column on the periodic table of elements. Which is the BEST explanation for this arrangement?

• They are all gases at room temperature

• They were all discovered in ancient times

• They have the same number of energy levels

• They have the same number of valence electrons

What type of chemical reaction occurs when beryllium (Be) combines with oxygen (O) to form beryllium oxide (BeO)?

• Double displacement (replacement)

• Single displacement (replacement)

• Decomposition

• Synthesis

Balance the following equation: HgO + Cl₂ → HgCl₂ + O₂.

• 2 HgO + 2 Cl₂ → 2 HgCl + 1 O₂

• 2 HgO + 2 Cl₂ → 2 HgCl + 1 O₂

• 1 HgO + 1 Cl₂ → 2 HgCl + 1 O₂

• 4 HgO + 2 Cl₂ → 4 HgCl + 2 O₂

Tags

NGSS.MS-PS1-5