Unit 4 review Chemistry Atomic structure

What is the basic unit of matter?

• Atoms
• Molecules
• Cells
• Minerals

Tags

NGSS.MS-PS1-1

What is the mass number of the element pictured?

• 7
• 9
• 16
• 25

Tags

NGSS.MS-PS1-1

What is the atomic number of the element pictured?

• 7
• 9
• 16
• 25

Tags

NGSS.HS-PS1-1

Dalton proposed that atoms are

• indivisible particles
• like plum pudding
• like a solar system
• imaginary

Tags

NGSS.MS-PS1-1

Deflections of the beam in a cathode ray tube demonstrated that all atoms contained 

• a dense positive nucleus
• negatively charged electrons
• neutral particles called neutrons
• photons of light

The gold foil experiment by Rutherford demonstrated that atoms contain

• a dense positive nucleus
• negatively charged electrons
• neutral particles called neutrons
• photons of light

The element bromine contains 80 protons and 80 electrons

• TRUE
• FALSE

Tags

NGSS.MS-PS1-1

According to the isotope notation shown below, how many neutrons does lithium have?

• 3
• 4
• 7
• 10

Calculate the average atomic mass of an element using the data table below

• 35.45 amu
• 35.426 amu
• 35.5 amu
• 35.4215 amu

Tags

NGSS.HS-PS1-7

How many protons, neutrons, and electrons are in ⁵⁹Ni⁺²?

• 59p⁺, 59n⁰, 61e^-
• 26p⁺, 31n⁰, 30e^-
• 28p⁺, 31n⁰, 26e^-
• 28p⁺, 59n⁰, 31e^-

Tags

NGSS.HS-PS1-7