Science 8 - Unit Test: Periodic Table

1. The order of elements on the periodic table is based on

• The number of protons in the nucleus

• The electric charge of the nucleus

• The number of neutrons in the nucleus

• The number of electrons in the nucleus

2. Atoms of elements that are in the same group have the same

• Number of protons

• Number of neutrons

• Number of valence electrons

• Number of electrons

3. As you move from left to right across the periodic table

• The elements become less metallic

• The atomic mass of the elements decreases

• The number of neutrons of each element increases by two

• The elements become more metallic

4. The atomic number of each element

• Indicates the number of protons and neutrons in the nucleus

• Indicates the number of valence electrons

• Indicates the number of protons in the nucleus

• Indicates the number of isotopes of the element

5. A subatomic particle with a negative charge

• Proton

• Electron

• Neutron

• Quark

6. Elements in group 17 are known as the (look at the Periodic Table to answer)

• Alkali metals

• Alkaline earth metals

• Noble gases

• Halogens

7. When one atom takes a valence electron(s) from another atom

• An ionic bond is formed

• A covalent bond is formed

• A polar bond is formed

• An alloy is formed

8. The atomic number for sodium is 11 and it has a mass number of 23. How many neutrons are in the nucleus of a sodium atom?

• 23

• 12

• 11

• 1

9. Atoms that gain or lose electrons are called

• Isotopes

• Metals

• Ions

• Nonmetals

10. Which of the following compounds is an example of a covalent bond?

• NaCl

• KBr

• CO₂

• MgCl₂

Tags

NGSS.MS-PS1-1