S1 Day 1 Review

Which model was created after the discovery of the nucleus?

• 
• 
• 
• 

Tags

NGSS.MS-PS1-1

Ernest Rutherford discovered that the atom was mostly _________________ and has a _______________ charged nucleus.

• empty space, positively
• empty space, negatively
• full of protons, positively
• full of neutrons, negatively

How many protons does Boron have?

• 5
• 11
• 6

Tags

NGSS.MS-PS1-1

What is the mass number of this atom?

• 1
• 3
• 4
• 7

Tags

NGSS.MS-PS1-1

Calcium has three different isotopes. One has a mass of 35.00 amu; another has a mass of 41.00 amu; and another has a mass of 40.00 amu. Which isotope is the most abundant of the three?

• 40.00 amu
• 41.00 amu
• 35.00 amu
• impossible to tell

If X is the symbol for an element, which of the following two symbols represent    isotopes of the same element?  
I. ⁷⁷₃₅X  II. ⁷⁷₃₃X  III. ⁸¹₃₇X  IV. ⁸¹₃₅ X

• I and II
• III and IV
• I and IV
• I and III

Tags

NGSS.MS-PS1-1

An element with 4.35% have a mass of 49.9461 amu, 83.79% have amass of 51.9405 amu, 9.50% have a mass of 52.9407 amu, and 2.36% have a mass of 53.9389amu.

• 51.99 amu
• 52.19 amu
• 53.45 amu
• 17.33 amu

When an electron transitions from a high energy level to a low energy level...

• the electron emits light of a specific wavelength and moves closer to the nucleus

• the electron emits light of a specific wavelength and moves away from the nucleus

• the electron absorbs energy and moves away from the nucleus

• the electron emits light of a random wavelength and moves closer to the nucleus

Tags

NGSS.HS-PS4-3

What atom matches this electron configuration?
1s²2s²2p⁶3s²3p⁶4s²3d¹⁰

• Zinc
• Copper
• Nickel
• Germanium

Tags

NGSS.HS-PS1-1

An atom becomes _________ when it gains electrons.

• Positive
• Negative
• Neutral
• Invinsible

Tags

NGSS.MS-PS2-3