AQA Chemistry Trilogy Paper 1 GCSE Revision

Which subatomic particle has a negative (-) charge?

• Proton
• Electron
• Neutron

Who created the "plum pudding" model of the atom?

• Democritus
• Rutherford
• Dalton
• Thomson

According to Ernest Rutherford, an atom is made of mostly....

• empty space
• electrons
• the nucleus
• protons

What is an isotope? 

• A charged atom
• An atom with different amounts of neutrons
• An atom with different amounts of protons
• A neutral atom

Tags

NGSS.HS-PS1-8

This model was developed after J.J. Thompson discovered electrons, a particle smaller than an atom. Is shows electrons floating freely in a positive space.

• The "Plum Pudding Model" of the atom
• The "Rutherford Model" of the atom
• Democritus's model of the atom
• The "Solar System Model" of the atom

Who discovered particles in the nucleus of atoms, neutrons

• Niels Bohr

• Ernest Rutherford

• J.J. Thomson

• James Chadwick

On the chromatogram given -------------- is mixture.

• red
• orange
• green
• black

Tags

NGSS.MS-PS1-2

A pure substance shows ------------------ spot on chromat gram

• 0
• 1
• 2
• 3

The diagram below shows a chromatogram obtained when a sample X was analysed together with four other known dyes P, Q, R and S. Dye Q was known to cause cancer. Which of the following dye(s) is/are safe for use?

• P only
• S only
• P and S
• P and X

Tags

NGSS.MS-PS1-2

A student extracts the colour from some green smarties and uses paper chromatography to separate components colours. She finds blue has a R_f =0.38 and yellow R_f =0.75 this suggests 

• the yellow is more strongly adsorbed onto the stationary phase and is less solublein the mobile phase.
• the yellow is more strongly adsorbed onto the stationary phase and is more soluble in the mobile phase.
• the blue is more strongly adsorbed onto the stationary phase and is less solublein the mobile phase.
• the blue is more strongly adsorbed onto the stationary phase and is less solublein the mobile phase.