Chemistry Semester Final Fall

What contribution did John Dalton make to atomic theory?

• He discovered that every atom was positively charged.

• He discovered the atom but not the subatomic particles

• He discovered that atoms had nuclei.

• He discovered that atoms could be divided into smaller parts.

Tags

NGSS.HS-PS1-7

Choose all the phases that have a definite (constant) VOLUME:

• solid

• liquid

• gas

• plasma

Tags

NGSS.MS-PS1-4

Is the color (not a color change) of an object a chemical or physical property?

• chemical

• physical

When energy increases, frequency ______________ & wavelength _______________.

• increases, increases

• decreases, decreases

• increases, decreases

• decreases, increases

Tags

NGSS.HS-PS4-1

What is the electron configuration of oxygen?

• 1s² 2s² 2p⁴

• 1s² 2s² 2p⁶

• 1s² 2p⁴

• 1s² 2s² 2p⁸

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Complete the nuclear reaction:

• 
• 
• 
• 

Tags

NGSS.HS-PS1-8

What produces more energy?

• fission

• fusion

• friction

• fraction

Tags

NGSS.HS-PS1-8

Which of the following contains IONIC bonds?

• LiBr

• NH₄

• SO₃

• CCl₄

Tags

NGSS.HS-PS1-3

What is the weakest type of radiation (can be stopped by construction paper)?

• alpha

• gamma

• beta

• delta

What part of the atom is very small and very dense?

• nucleus

• protons

• neutrons

• electrons

Tags

NGSS.HS-PS1-8