Leaving Certificate: Pop Quiz

Fergus_

Took the idea from Junior Certificate, I ask a question and you answer it and you then ask a question. Simples

Also, state what subject relates to the question you are asking.

Biology

What is the definition for sex linkage?

thetonynator

Where the gene for a trait are carried on the sex chromosomes. (Not correctly worded but i think its right!)

Chemistry: Why is steam distillation used to extract clove oil from cloves?

mnop

Steam distillation allows the mixture of organic liquids to distill below 100 degrees which makes it good for unstable or high boiling point compounds. (Eugonol has a boiling point of 254 degrees)

Chemistry: Give three differences between Mendeleev's table and the modern table of elements.

Just Like Heaven

mnop wrote: »

Chemistry: Give three differences between Mendeleev's table and the modern table of elements.

In the modern Table the elements are arranged in order of increasing atomic Number. In Mendeleev's, atomic weight.

There are no gaps in the modern periodic table of elements.
Mendeleev left gaps in his table for undiscovered elements.

In the modern table the transition elements are listed seperately.
Mendeleev did not put the transition elements in a seperate block.



Physics; Derive Newton's second law of Gravitation.

Sunny!!

i like this:)

How many sigma and how many pi bonds are in a triple bond?

Chemistry

Just Like Heaven

Sunny!! wrote: »

i like this:)

How many sigma and how many pi bonds are in a triple covalent bond?

Chemistry

1 Sigma and 2 Pies

Sunny!!

fewtinsoffroth wrote: »

1 Sigma and 2 Pies

:L have you any q for me?


I've another.

Why do ionic substances conduct electricity when molten or dissolved in water but not in the solid state?

Closet Monkey

fewtinsoffroth wrote: »

In the modern Table the elements are arranged in order of increasing atomic Number. In Mendeleev's, atomic weight.

There are no gaps in the modern periodic table of elements.
Mendeleev left gaps in his table for undiscovered elements.

In the modern table the transition elements are listed seperately.
Mendeleev did not put the transition elements in a seperate block.



Physics; Derive Newton's second law of Gravitation.

The weight of (w) of a body is the gravitational force on that body. Weight is given by W=mg. Equating F=GMm/r(squared) and F=mg we get g=GM/r(squared)


Chemistry: Give two properties of a cathode ray?

Sunny!!

Closet Monkey wrote: »

The weight of (w) of a body is the gravitational force on that body. Weight is given by W=mg. Equating F=GMm/r(squared) and F=mg we get g=GM/r(squared)


Chemistry: Give two properties of a cathode ray?

Negatively charged?
have penetrating ability?

Chuchoter

This is such a fun idea!!
Actually Sunny, whats the answer to the one about molten ionic compounds and electriicity, I've never come across that before
Physics people, describe how a fridge keeps things cold.

Sunny!!

Chuchoter wrote: »

This is such a fun idea!!
Actually Sunny, whats the answer to the one about molten ionic compounds and electriicity, I've never come across that before
Physics people, describe how a fridge keeps things cold.

it won't in the solid state as the particles are fixed.
And the particles are not fixed in the molten or dissolved state:)

Closet Monkey

Chemistry: What is the Aufbau Principle ( I think it's spelled like that )?

Coeurdepirate

Closet Monkey wrote: »

Chemistry: What is the Aufbau Principle ( I think it's spelled like that )?

It determines the electronic configuration of an atom/ion/molecule.

Chemistry: What is radioactivity and who discovered it?

Eathrin

Coeurdepirate wrote: »

It determines the electronic configuration of an atom/ion/molecule.

Chemistry: What is radioactivity and who discovered it?

I don't do chemistry so as far as the JC takes me I believe Marie Curie died from radioactivity and some lad called Becquerel(?) discovered it.
I think it's got something to do with the decay of atoms.

Btw love the idea! Maybe thread is a little chemistry heavy though ;-)

Physics: State snell's law

Chuchoter

SinI over SinR = n, where n is the refractive index.

Chemistry: Define Chemical Equilibrium? What is meant by dynamic in terms of Chemical Equilibrium?

Nazata

Chuchoter wrote: »

SinI over SinR = n, where n is the refractive index.

Chemistry: Define Chemical Equilibrium? What is meant by dynamic in terms of Chemical Equilibrium?

Chemical equilibrium is where the rate of reactions for both sides of a reversible reaction are equal ie. the concentrations of reactions and products will not change for a fixed system.
Dynamic equilibrium refers to equilibrium in which the two 'opposite' forces are equal and constantly acting against each other (effectively cancelling each others effect), thus causing an overall state of equilibrium.

Chemistry: Give two proofs for the existence if energy levels.

Coeurdepirate

(i) If an atom is supplied with energy it goes to a higher energy level and is called excited.
(ii) The electron isn't stable in the higher level so it moves back down which releases energy.

For a bit of a change of scene,
Biology: Where does the Kreb's cycle take place?

fleeflyfloflum

Coeurdepirate wrote: »

(i) If an atom is supplied with energy it goes to a higher energy level and is called excited.
(ii) The electron isn't stable in the higher level so it moves back down which releases energy.

For a bit of a change of scene,
Biology: Where does the Kreb's cycle take place?

In the mitochondia.

To continue in the same vain...

Define Parasitism.

Just Like Heaven

fleeflyfloflum wrote: »

In the mitochondia.

To continue in the same vain...

Define Parasitism.

Parasites are organisms that take in their food from a live host, often causing harm.


English; Write a personnal response to the poetry of seamus Heaney.










No?

Bio; give 3 functions of water in organisms.

Sunny!!

fewtinsoffroth wrote: »

Parasites are organisms that take in their food from a live host, often causing harm.


English; Write a personnal response to the poetry of seamus Heaney






No?

Bio; give 3 functions of water in organisms.

- The eye is mostly supported by water
- Temperature Regulation
- Osmosis

Eathrin

Sunny!! wrote: »

- The eye is mostly supported by water
- Temperature Regulation
- Osmosis

Needs question!

Business: What are the personal characteristics of entrepreneurs?

Sunny!!

Cian A wrote: »

Needs question!

Business: What are the personal characteristics of entrepreneurs?

forgot :L

- They set up business
- they are pro-active
- they are independent
- self-belief
- show initiative

Business: what are the 3 types of leadership?

Biology: Explain giving 3 examples of each the difference between a prokaryotic cell eukaryotic cell?

Caireann

Sunny!! wrote: »

Cian A wrote: »

Needs question!

Business: What are the personal characteristics of entrepreneurs?

forgot :L

- They set up business
- they are pro-active
- they are independent
- self-belief
- show initiative

Business: what are the 3 types of leadership?

Biology: Explain giving 3 examples of each the difference between a prokaryotic cell eukaryotic cell?

Prokaryotic cells do not have a nucleus or membrane enclosed organelles eg. Mitochondria.
They are single celled organisms such as bacteria.
They are small and primitive.

Eukaryotic have enclosed nucleus and cell organelles.
They are larger and more advanced.
They are multi-cellular organisms eg. plant and animal.

Chemistry: What is the principal of a mass spectrometer?

Sunny!!

Caireann wrote: »

Prokaryotic cells do not have a nucleus or membrane enclosed organelles eg. Mitochondria.
They are single celled organisms such as bacteria.
They are small and primitive.

Eukaryotic have enclosed nucleus and cell organelles.
They are larger and more advanced.
They are multi-cellular organisms eg. plant and animal.

Chemistry: What is the principal of a mass spectrometer?

very good!

This is only a guess, but separation of masses of elements uses a magnetic field.



Chemistry: what is a transition element?

Coeurdepirate

Sunny!! wrote: »

very good!

This is only a guess, but separation of masses of elements uses a magnetic field.



Chemistry: what is a transition element?

An element that doesn't have a full d-sublevel.

This thread is so chemistry-heavy...

Chemistry: What is 'knocking' (fractional distillation) ?

Sunny!!

Coeurdepirate wrote: »

An element that doesn't have a full d-sublevel.

This thread is so chemistry-heavy...

Chemistry: What is 'knocking' (fractional distillation) ?

ignition of fuel?

Chemistry: how would you test for the nitrate ion?

Caireann

Sunny!! wrote: »

Coeurdepirate wrote: »

An element that doesn't have a full d-sublevel.

This thread is so chemistry-heavy...

Chemistry: What is 'knocking' (fractional distillation) ?

ignition of fuel?

Chemistry: how would you test for the nitrate ion?

Brown Ring Test
Add Iiron (II) sulfate solution then slowly add concentrated sulfuric acid. Brown ring forms at junction of two layers.

Biology/Ecology : How would you carry out a qualitative survey?

Eathrin

Sunny!! wrote: »

Business: what are the 3 types of leadership?

Directing staff
Personality and charisma
Setting and example
Delegating work

Gaeilge: Cad iad na teamaí sa dán Colscaradh?

Coeurdepirate

Tá an choimlint idir lánúineacha pósta mar théama sa dán seo. Tá grá dóite agus easpa tuisceana idir bheirt mar théamaí ann freisin.
Boo yeah, wrote out notes on that poem during Religion today :pac:

Chem again: Define electronegativity

Rickyy

Coeurdepirate wrote: »

Tá an choimlint idir lánúineacha pósta mar théama sa dán seo. Tá grá dóite agus easpa tuisceana idir bheirt mar théamaí ann freisin.
Boo yeah, wrote out notes on that poem during Religion today :pac:

Chem again: Define electronegativity

The tendency of an atom or radical to attract electrons in the formation of an ionic bond.

QUESTION: What is the origin of existence.

Goodluck ;]

Caireann

Rickyy wrote: »

QUESTION: What is the origin of existence.

Goodluck ;]

I'm going to go with the big bang on this one but not sure if that's what your looking for.

Geography: NAMED Irish feature of erosion?