Chemistry Ch 3: Atoms and Moles

How many protons are there in an atom of ⁴⁸₂₂Ti? 

• 22
• 26
• 48
• 70

Tags

NGSS.MS-PS1-1

How many electrons are there in an atom of ⁴⁸₂₂Ti? 

• 22
• 26
• 48
• 70

Tags

NGSS.HS-PS1-1

How many neutrons are there in an atom of ⁴⁸₂₂Ti? 

• 22
• 26
• 48
• 70

Tags

NGSS.MS-PS1-1

Isotopes are atoms of the same element that have different...

• numbers of e-
• numbers of p+
• masses
• principle chemical properties

Tags

NGSS.HS-PS1-8

Which of the following is NOT part of Dalton's atomic theory? 

• Atoms cannot be divided, created or destroyed. 
• The number of p+ is an atoms atomic number
• all mater is composed of atoms
• in chemical reactions atoms are combined, separated, or rearranged. 

Tags

NGSS.HS-PS1-7

The gold foil experiment led to teh discovery of the...

• nucleus
• e- cloud
• cathode tay
• neuton

The law of conservation of mass follows from the concept that 

• matter is composed of atoms
• atoms of different elements have different properties
• atoms can be destroyed
• atoms are indivisible

Tags

NGSS.HS-PS1-7

The nucleus of most atoms is composed of...

• protons
• neutrons
• electrons
• protons and neutrons

Tags

NGSS.HS-PS1-8

The mass of a neuton is

• double that of a proton
• double that of an electron
• about the same as a p+
• about the same as an e-

Most of the volume of an atoms is occupied by...

• protons
• nucleus
• electron cloud
• neutrons