Shell revision quiz

Which state of matter has the highest energy?

• solid

• liquid

• gas

Which state of matter has the lowest energy?

• solid

• liquid

• gas

when a solid turns to a gas

• boiling

• evaporating

• subliming

Which particles are in the nucleus of an atom

• protons only

• protons and neutrons

• protons and electrons

• protons, neutrons and electrons

Which subatomic particle has a relative mass of 1 and a relative charge of +1

• electron

• neutron

• proton

an atom contains 12 protons and 15 neutrons.

What is its atomic mass number?

• 3

• 12

• 15

• 27

An atom has 10 electrons.

what is the electron arrangement of this atom?

• 2, 4, 4

• 4, 4, 2

• 2, 8

• 8, 2

Which sentence describes how a sodium atom Na becomes a sodium ion Na⁺

• it gains 1 electron

• it gains 1 proton

• it loses 1 electron

• it gains 7 electrons

The melting point of element X is -29^oC and its boiling point is 47^oC

What is its physical state at room temperature (25^oC)

• solid

• liquid

• gas

What is the Rf value of the blue pigment?

• 0.8

• 1.25

• 8

• 80