Monday Review

Which description below would accurately describe the current model of the atom?

• Electrons with almost no mass are distributed around the nucleus
• Protons, electrons, and neutrons are evenly distributed throughout all parts of the atom
• The nucleus of the atom consists of protons, neutrons, and electrons
• The nucleus of the atom is made of electrons and protons

Which of the diagrams below shows particles with a definite shape and a definite volume?

• Diagram A
• Diagram B
• Diagram C
• None of the diagrams fit this description

On the phase change diagram below, sublimation would be described as a movement between which two letters?

• A to B
• B to C
• C to A
• A to C

The substance in the phase diagram below is being held at a pressure of 1.00 atm. If the pressure does not change, the substance should be a liquid at which temperature below?

• 800 °C
• 300 °C
• 100 °C
• -100 °C

An element's identity is determined by the...

• Number of electrons
• Number of protons
• Number of neutrons
• Atomic Mass

How many protons, neutrons, and electrons are there in an atom of chromium?

• 24 protons, 28 neutrons, 24 electrons
• 24 protons, 24 neutrons, 28 electrons
• 52 protons, 52 neutrons, 24 electrons
• 24 protons, 28 neutrons, 28 electrons

How many protons, neutrons, and electrons are there in an atom with an atomic number of 55 and a mass of 135?

• 55 protons, 80 neutrons, 55 electrons
• 55 protons, 55 neutrons, 80 electrons
• 50 protons, 120 neutrons, 75 electrons
• 80 protons, 70 neutrons, 55 electrons

How many protons, neutrons and electrons are found in the atomic diagram below?

• 3 protons, 3 neutrons, 3 electrons
• 3 protons, 4 neutrons, 4 electrons
• 4 protons, 3 neutrons, 3 electrons
• 3 protons, 4 neutrons, 3 electrons

How many valence electrons will be found in an atom of bromine?

• 1 valence electrons
• 2 valence electrons
• 7 valence electrons
• 35 valence electrons

How does the magnesium ion below differ from a neutral magnesium atom (Mg)?

• The magnesium ion contains more electrons
• The magnesium ion contains more protons
• The magnesium ion contains fewer electrons
• The magnesium ion contains fewer protons