Atom Structure, Isotopes and forces

Carbon-12 and Carbon-13 are 2 different isotopes of carbon. Which of the following properties are different between isotopes of the same element?

• mass

• physical properties

• chemical properties

• all of these

A neutral atom of nitrogen has 7 protons. How many electrons would it have?

• 7

• 17

• 8

• 6

• impossible to determine

Tags

NGSS.MS-PS1-1

Using the periodic table, how many neutrons would be in oxygen-18? (Chemical symbol for oxygen = O)

• 8

• 9

• 10

• 4

Tags

NGSS.MS-PS1-1

The image shows the nuclear/isotopic notation for phosphorus. What is its mass number?

• 15

• 31

• 36

The image shows the nuclear/isotopic notation for phosphorus. What is its atomic number?

• 31

• 15

• 36

Tags

NGSS.MS-PS1-1

Which image would show a nuclear/isotopic notation for an isotope of copper? (use the periodic table).

• 
• 
• 

Tags

NGSS.MS-PS1-1

Isotopes of an element have the same number of ______, but different numbers of _____.

• neutrons; electrons

• protons; electrons

• neutrons; protons

• protons; neutrons

Which force holds the protons and neutrons together in the nucleus?

• strong nuclear

• weak nuclear

• electromagnetic

• gravitational

What is contained in the nucleus of an atom? (Select ALL)

• protons

• neutrons

• electrons

What is the mass number of potassium that has 19 protons and 20 neutrons?

• 19

• 20

• 39

• 10