Warm-Up Day 9

An element has an atomic number of 15. How many electrons does it have in a neutral state?

• 13

• 14

• 15

• 16

Which of the following elements is most likely to be found in Group 14 of the periodic table?

• Helium

• Carbon

• Sodium

• Chlorine

Identify the element that is a metalloid and is located in Period 3 of the periodic table.

• Silicon

• Phosphorus

• Sulfur

• Argon

Which element is located in Group 1 and is known for being highly reactive with water?

• Lithium

• Beryllium

• Boron

• Carbon

What is the atomic mass of an element with 8 protons, 8 neutrons, and 8 electrons?

• 8

• 16

• 24

• 32

Which of the following elements is a nonmetal and is located in Group 17?

• Fluorine

• Neon

• Argon

• Krypton

An element is located in Period 4 and Group 2 of the periodic table. What is this element?

• Calcium

• Magnesium

• Strontium

• Barium

Which of the following is a characteristic property of metalloids?

• High electrical conductivity

• Brittle

• Malleable

• Dull

What information is typically found in the box of an element on the periodic table?

• Only the element's name and symbol

• The element's atomic number, symbol, and atomic mass

• Only the element's atomic number and mass

• Only the element's symbol and atomic mass

Which of the following elements is a transition metal and is commonly used in construction?

• Aluminum

• Iron

• Lead

• Tin