Chemistry Final Exam.

The periodic table is organized by the

• atomic numbers

• alphabetical order

• densities

• melting points

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Decomposing of an apple is an example of...

• chemical change

• physical change

Tags

NGSS.MS-PS1-2

Which answer is an example of a chemical change?

• Boiling water

• rusting iron

• dissolving powder

• freezing water

Tags

NGSS.MS-PS1-2

Which of the following substances are elements?

• water

• salt

• carbon dioxide

• hydrogen

States of Matter: Liquid turning into a solid is called...

• melting

• freezing

• evaporation

• condensation

• sublimation

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of these is an example of a Homogeneous mixture:

• Tea with sugar

• oil and water

• NaCl

• H₂O

Subatomic particles with a negative charge

• Electrons

• Neutrons

• Protons

• Quarks

Tags

NGSS.HS-PS2-4

Measure mainly of the nuclear particles: protons + neutrons

• Subatomic Particles
• Atomic Number
• Atomic Mass
• Gluons

Tags

NGSS.HS-PS1-8

Calculation used to find the number of neutrons in an atom

• Atomic Mass - Atomic Number
• Atomic Number - Atomic Mass
• Atomic Mass - Electrons
• none of these

What is the atomic number for an element with 41 neutrons and a mass number of 80?

• 39
• 41
• 80
• 121