Physical Science 2nd Semester Exam Review

Which substance is most likely classified as a colloid?

• soft drink
• oxygen gas
• water
• fog

This diagram represents a neutral atom of fluorine-19. Which best describes the structure of fluorine-19?

• 2 electrons in the first energy level; 7 electrons in the second energy level
• 2 electrons in the first energy level; 8 electrons in the second energy level
• 9 protons and 9 neutrons in the nucleus
• 10 protons and 9 neutrons in the nucleus

Tags

NGSS.MS-PS1-1

An atom has 29 protons, 29 electrons, and 35 neutrons.  What is the mass number of the atom?

• 29
• 35
• 64
• 93

Tags

NGSS.MS-PS1-1

How many protons and neutrons are there in an atom of Boron if it has an atomic number of 5 and a mass of 11?

• 5 protons, 6 neutrons
• 5 protons, 11 neutrons
• 11 protons, 5 neutrons
• 11 protons, 6 neutrons

Tags

NGSS.MS-PS1-1

Which accounts for most of the mass of an atom?

• electrons
• protons
• neutrons and protons
• electrons and neutrons

Which describes an atom with an atomic number of 9?

• 10 protons, 9 neutrons
• 9 protons, 10 neutrons
• 4 protons, 5 neutrons
• 3 protons, 3 neutrons

Tags

NGSS.MS-PS1-1

Which best represents how electrons are arranged in the energy levels of a carbon atom?

• 1 electron in first energy level, 5 electrons in the second energy level
• 2 electrons in first energy level, 4 electrons in the second energy leve
• 3 electrons in first energy level, 3 electrons in the second energy leve
• 4 electron in first energy level, 2 electrons in the second energy leve

Tags

NGSS.HS-PS1-1

Which element has the same number of valence electrons as Krypton (Kr)?

• Neon (Ne)
• Fluorine (F)
• Chlorine (Cl)
• Selenium (Se)

Tags

NGSS.HS-PS1-1

An element located in group 18 and period 4 would be classified as which type of substance?

• a halogen
• a metalloid
• a lanthanoid
• a nonmetal

Tags

NGSS.HS-PS1-1

A moving skateboard

• Potential
• Kinetic

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5