Unit 1 test: Atoms, periodic table, isotopes, and ions

Look at the Periodic Table. Which element is found in Period 3 and Group 5?

• P, Phosphorus
• N, Nitrogen
• V, Vanadium
• In, Indium

When a neutral atom loses an electron, what does it become?

• a positive ion
• a negative ion
• a positive isotope
• a negative isotope

What are the vertical columns on the periodic table called?

• valence
• periods
• rows
• groups

If an atom of an element from the halogen group gains one electron it becomes an ion. How many valence electrons will this new ion have?

• 0
• 7
• 8
• 17

On the periodic table, the most reactive group of metals are so reactive they will even react with water. They all have 1 valence electron and tend to form ions with a +1 charge. What do we call this group?

• Alkali Metals
• Transition Metals
• Rare Earth Metals
• Alkaline Earth Metals

Which of the following describes MOST of the elements on the Periodic Table?

• Most elements are metals and solid at room temperature.
• Most elements are nonmetals and solid at room temperature.
• Most elements are metalloids and solid at room temperature.

What information in the periodic table tells you the number of protons in an atom?

• the position of the element in its column
• the element's chemical symbol
• the element's atomic number
• the element's atomic mass

Which of the following are alkaline earth metals?

• copper (Cu) and zinc (Zn)
• iron (Fe) and silver (Ag)
• sodium(Na) and potassium (K)
• calcium (Ca) and magnesium (Mg)

Which classification of elements means the element shares characteristics with BOTH metals and nonmetals?

• salts
• metalloids
• halogens
• lanthanides

Which particle in an atom has a negative electric charge?

• electrons
• protons
• nuetrons
• nuclei