National 5 Chemistry Unit 1 - Rates and atomic structure

A student made some statements about particles found in atoms. Identify the 2 statements that apply to both a proton and a neutron.

• Relative mass almost zero

• charge = 1+

• charge = 0

• Found inside the nucleus

• Relative mass = 1

A student made some statements about particles found in atoms. Identify the 2 statements that apply to both an electron.

• charge = -1

• charge = 1+

• charge = 0

• Found outside the nucleus

• Relative mass = 1

Identify the particle which is a negative ion.

• Protons = 11, neutrons = 12, electrons = 11

• Protons = 9, neutrons = 10, electrons = 9

• Protons = 11, neutrons = 13, electrons = 11

• Protons = 19, neutrons = 20, electrons = 18

• Protons = 9, neutrons = 10, electrons = 10

Tags

NGSS.MS-PS1-1

Identify the particle which would give a lilac flame colour (use page 6 of your data book).

• Protons = 11, neutrons = 12, electrons = 11

• Protons = 9, neutrons = 10, electrons = 9

• Protons = 11, neutrons = 13, electrons = 11

• Protons = 19, neutrons = 20, electrons = 18

• Protons = 9, neutrons = 10, electrons = 10

Identify the 2 particles which are isotopes.

• Protons = 11, neutrons = 12, electrons = 11

• Protons = 9, neutrons = 10, electrons = 9

• Protons = 11, neutrons = 13, electrons = 11

• Protons = 19, neutrons = 20, electrons = 18

• Protons = 9, neutrons = 10, electrons = 10

Identify the compound that produces a green flame colour (use page 6 of your data book).

• strontium chloride

• lithium oxide

• calcium oxide

• barium fluoride

• sodium fluoride

Identify the compound that produces a green flame colour (use page 6 of your data book).

• strontium chloride

• lithium oxide

• calcium oxide

• barium fluoride

• potassium chloride

There are three different atoms of neon with mass numbers 20,21 and 22. A sample of neon has an average atomic mass of 20.2. Which isotope of neon is abundant in the sample?

• Neon-20

• Neon-21

• Neon-22

Tags

NGSS.MS-PS1-2

Copper chloride is electrolysed. Which statement is true?

• The copper ions move towards the positive electrode.

• The copper ions move towards the negative electrode.

• Bubbles appear at the negative electrode

• The positive electrode is coated in a brown solid.

Tags

NGSS.HS-PS3-5

Which 2 substances will conduct electricity?

• solid sodium chloride

• sodium chloride solution

• sugar solution

• molten copper oxide