Subatomic Particles & Atoms

Match the following

• element

• if you change the number of neutrons you get a different...

• protons & neutrons

• an isotope has the same number of protons but a different number of...

• neutrons

• these are in the nucleus

• nucleus

• the mass of the atom is found here

• mass

• if you change the number of protons you get a different...

What property determines if an atom is identified as Chlorine?

• it has 18 neutrons

• it has an atomic mass of 35

• it has 17 protons

• Its element symbol is Cl

Tags

NGSS.MS-PS1-1

How many electrons does a Copper atom have?

• 63

• 29

• 92

• 34

Tags

NGSS.MS-PS1-1

How many protons are in a phosphorus atom?

• 15

• 16

• 31

• 46

Tags

NGSS.MS-PS1-1

How many neutrons are in a Phosphorus atom?

• 15

• 30.9738

• 16

• 31

Tags

NGSS.MS-PS1-1

What is the name of J.J. Thomson's Model of an Atom?

• Jimmy Neutron Model

• Solar System Model

• Plum-Pudding Model

• Quantum mechanical Model

Who was Ernset Rutherford?

• English Science teacher who developed the first Atomic Theory

• English physicist who discovered an electron

• German physicist who discovered a proton

• New Zealand born physicist who established existence of a positively charged nucleus in an atom

What were J. J. Thomson's three contributions to the atomic theory?

• Discovered the electron

• Discovered the nucleus -did the gold foil experiment

• Used the cathode ray tube in his discovery

• Created a model of the atom with electrons moving around the nucleus in fixed orbits

Tags

NGSS.MS-PS1-1

How many electrons does an atom of Krypton have?

• 36

• 83.80

• 48

• 119.80

Tags

NGSS.HS-PS1-1

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

• 39
• 41
• 80
• 121