6th Grade Science: Chapter 8 Lesson 3 and 4

Most things around us are made up of compounds.

• True
• False

What is the role of valence electrons in the bonding of atoms?

• They determine the atomic mass
• They influence the atomic number
• They play a role in bonding
• They control the nucleus

According to the periodic table trend, how does the number of valence electrons change from left to right?

• Decreases
• Remains constant
• Increases
• Changes randomly

Why are elements in Group 1 considered extremely reactive?

• They have high atomic masses
• They have only one valence electron
• They are noble gases
• They have low atomic numbers

What is the relationship between the size of atoms and their energy levels, based on the information provided?

• Larger atoms have lower energy levels
• Smaller atoms have higher energy levels
• Larger atoms have higher energy levels
• Size and energy levels are unrelated

What element is considered the most reactive?

• Helium
• Neon
• Fluorine
• Argon

What is the common name for elements in Group 18?

• Alkali Metals
• Noble Gases
• Halogens
• Transition Metals

How many valence electrons do elements in Group 18 generally have, with the exception of Helium?

• 2
• 4
• 6
• 8

What does it mean for elements on the periodic table to be neutral?

• They have no charge
• They have a positive charge
• They have a negative charge
• They have both positive and negative charges

Why do elements on the periodic table form bonds?

• To become more reactive
• To increase their atomic number
• To become more stable
• To decrease their mass