Exam (elaborations)
OCR Salters B AS Chemistry - Elements of Life Questions and Answers 2024
- Course
- Institution
OCR Salters B AS Chemistry - Elements of Life
[Show more]
Content preview
OCR Salters B AS Chemistry - Elementsof Life
How do you convert from cubic decimetres to cubic centimetres? - answerMultiply by
1000
What is the flame colour for lithium ions? - answerBright red
What is the flame colour for sodium ions? - answerYellow
What is the flame colour for potassium ions? - answerLilac
What is the flame colour for calcium ions? - answerBrick red
What is the flame colour for barium ions? - answerApple green
What is the flame colour for copper ions? - answerBlue-green
How do you convert from cubic centimetres to cubic decimetres? - answerDivide by
1000
What is the formula for concentration? - answerMoles/Volume
What is the equation for the speed of light? - answerFrequency x wavelength
What is the formula for the number of moles? - answerMass/Molar Mass
What is the formula for percentage yield? - answerExperimental yield/Theoretical yield x
100
What is the name of a molecule with 6 areas of electron density? - answerOctahedral
What is the name of a molecule with 5 areas of electron density? - answerBipyramidal
What is the name of a molecule with 4 areas of electron density? - answerTetrahedral
What is the name of a molecule with 3 areas of electron density? - answerTrigonal
planar
What is the name of a molecule with 2 areas of electron density? - answerLinear
, What is the bond angle of an octahedral molecule? - answer90 degrees
What is the bond angle of a bipyramidal molecule? - answer120 and 90 degrees
What is the bond angle of a tetrahedral molecule? - answer109.5 degrees
What is the bond angle of a trigonal planar molecule? - answer120 degrees
What is the bond angle of a linear molecule? - answer180 degrees
By how many degrees does a lone pair repel other bonds? - answer2.5 degrees
Define the term 'dative covalent bond' - answerA covalent bond where both electrons
have been donated by one atom.
Define the term 'isotope' - answerIsotopes have the same atomic number but different
mass numbers.
What is the maximum number of electrons in the s-sub shell? - answer2
What is the maximum number of electrons in the p-sub shell? - answer6
What is the maximum number of electrons in the d-sub shell? - answer10
What is the maximum number of electrons in the f-sub shell? - answer14
Using Avogadro's constant, what is the formula for number of moles? - answerNumber
of particles/Avogadro's constant
What is the relative mass of a proton? - answer1
What is the relative mass of a neutron? - answer1
What is the relative mass of an electron? - answer1/1836
What is the relative charge of a proton? - answer+1
What is the relative charge of a neutron? - answer0
What is the relative charge of an electron? - answer-1
Why does sodium hydroxide never go in the burette during titrations? - answerIt blocks
the burette
Name 2 indicators that can be used for acid-base titrations - answerMethyl orange and
phenolphthalein
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller julianah420. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
80461 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now