#1. What is the chemical symbol for gold?

enter answer here...

#2. Which description most accurately describes covalent bonding

electrons are transferred between atoms

electrons are shared between atoms

#3. What is the formula for the compound calcium nitrate which is made of calcium and nitrate ions (NO₃⁻)?

Ca(NO₃)₂

CaNO₂

Ca(NO₂)₂

#4. What is the approximate radius of a nucleus?

1 x 10⁻⁵

1 x 10⁻³

1 x 10⁻¹⁵

1 x 10⁻⁴

#5. Complete the following equation describing a reaction with a metal carbonate and an acid: metal carbonate + acid → .... + .... + ....

Select all that apply:

ozone

oxygen

salt

carbon dioxide

water

#6. Why is graphite softer than diamond?

Graphite is arranged in sheets with weak intermolecular forces holding them together. These can easily slide, making graphite soft.

Graphite is softer because the covalent bonds are weaker between atoms of carbon in graphite than in diamond

Graphite is actually harder than diamond

#7. In an experiment to measure the rate of photosynthesis of pondweed in a test tube, the number of bubbles (oxygen) produced per minute is used to determine the rate of reaction. What is this experiment actually measuring?

The volume of the reactants of the reaction

The mass of the reactants of the reaction

The concentration of the products of the reaction

The volume of the products of the reaction

The mass of the products of the reaction

#8. What is the boiling temperature of water?

55˚C

100˚C

66.5˚C

10˚C

30˚C

25˚C

#9. Which description best describes a compound?

contains more than one type of atoms, but not chemically bonded together

contains more than one type of atoms, chemically bonded together

contains only one type of atom

#10. What is the relative mass of an electron?

2

0 or 1/1840

1

#11. What is the chemical symbol for mercury?

enter answer here...

#12. Which of these is a problem with 3D ball and stick models?

The model does not show that the ions will be constantly vibrating

They do not show how the structure formed and suggest that the electrons in different atoms are different, but they are actually the same

The model shows the atoms as being too far apart and there are no sticks

#13. Complete the following equation describing a reaction with a metal and an acid: metal + acid → .... + ....

Select all that apply:

oxygen

hydrogen

electrons

salt

#14. What is the formula for the polyatomic ion ammonium?

OH⁻

SO₄²⁻

CO₃²⁻

NO₃⁻

SO₃²⁻

NH₄⁺

#15. What is the chemical symbol for calcium?

enter answer here...

#16. Alkalis produce an excess of what when they dissolve in water?

sulfate ions

sulfite ions

hydroxide ions

hydrogen ions

#17. Calculate the relative formula mass of copper oxide (CuO) to 2 decimal places. Copper Aᵣ = 63.5, Oxygen Aᵣ = 16.

enter answer here...

#18. What is the mass number of an element?

the total number of subatomic particles in an atom

the number of protons plus neutrons

#19. Which type of reaction transfers energy to the surroundings?

Endothermic

Mesothermic

Exothermic

#20. Which of these describes the term "rate of reaction"?

The number of particles involved in a reaction in 1 minute

The speed at which reactants are turned into products

The rate of temperature change in the surroundings

#21. Lead has 4 stable isotopes. ²⁰⁴Pb (abundance - 1.4%), ²⁰⁵Pb (abundance - 24.1%), ²⁰⁷Pb (abundance - 22.1%) and ²⁰⁸Pb (abundance - 52.4%). Calculate the Aᵣ of lead. Answer to 2 decimal places.

enter answer here...

#22. What is the chemical symbol for iron?

enter answer here...

#23. What is the chemical symbol for xenon?

enter answer here...

#24. When a mixture of rocks, salt and water is filtered, what will be the residue?

salt

sand

water

rocks

#25. What is the chemical symbol for chlorine?

enter answer here...

#26. If covalent bonds are very strong, then why does water have a low melting point?

The bonds between hydrogen and oxygen are weaker than typical covalent bonds

Water has a high melting point

There are only weak intermolecular forces between the molecules in water. The atoms remain bonded whilst the molecules become separated.

#27. Which types of atoms can be found in a pure piece of gold?

Select all that apply:

trace amounts of other elements

carbon atoms

gold atoms

#28. Are metals usually malleable or brittle?

Malleable

Brittle

#29. Determine the empirical formula of glucose - C₆H₁₂O₆.

C₂H₂O

CHO₂

CH₂O

C₂OH

#30. Which of the following are uses for paper chromatography?

Select all that apply:

separating insoluble solids

distinguishing between pure and impure substances

identifying substances by calculating Rf values

determining the boiling point of a substance

identifying substances by comparing chromatogram patterns to patterns formed by known substances

#31. What is the name of the phase change from solid to gas?

condensation

melting

sublimation

deposition

evaporation/boiling

freezing

#32. H₂SO₄(aq) + Na₂O(s) → .... + ....

Select all that apply:

Na₂SO₄(aq)

MgOH

2H₂O (l)

H₂O (l)

NaOH

#33. Where is most of the mass of an atom?

orbiting the nucleus in the electrons

in the nucleus

#34. Do non-metals usually have a high or low density?

Low

High

#35. Is it possible to control the rate of reaction?

No

Yes

#36. Which of the following are properties of ionic compounds?

conduct electricity as solids

usually soluble

low melting and boiling points

usually insoluble

conduct electricity when molten or dissolved

high melting and boiling points

#37. What are positive ions called?

cations

anions

#38. What is the formula for calcium hydroxide?

HCL

H₂SO₄

HNO₃

KOH

NaOH

Ca(OH)₂

#39. Which of the following was the Rutherford Model of atomic structure?

A mass of positively charged material with negatively charged electrons distributed throughout it

A central nucleus containing protons and neutrons, surrounded by electrons

#40. Which three particles are atoms composed of?

enter answer here...

#41. Why did Ernest Rutherford's experiments with gold foil demonstrate that most of atoms consists of empty space?

Most of the atoms were deflected or bounced back

Most of the atoms passed straight through the foil

Most of the particles were destroyed when they met protons in the nucleus

#42. Why does graphite conduct electricity?

Because it has only three covalent bonds, leaving one delocalised electron from each atom. These electrons are able to carry the charge.

Because it has more protons than electrons, this gives it a positive charge and enables it to carry a charge

#43. What is the chemical symbol for oxygen?

enter answer here...

#44. During crystallisation, there is a risk of spitting which could cause harm. Which of the following could reduce the risk?

Select all that apply:

putting a cover over the evaporating dish

using steam to heat the evaporating basin carefully

wearing eye protection

removing the bunsen burner before solution is dry

#45. Calculate the empirical formula of a compound that contains 69.94g of Fe (Aᵣ - 55.85) and 30.06g of O (Aᵣ - 12.00).

Fe₂O₂

Fe₂O₃

Fe₃O

Fe₂O

#46. What is the chemical symbol for carbon?

enter answer here...

#47. What are negative ions called?

enter answer here...

#48. Paper chromatography is used to separate which types of materials?

separating soluble compounds

separate soluble materials from insoluble materials

separate different types of liquids

#49. What is the chemical symbol for tin?

enter answer here...

#50. What do group one atoms do when they bond ionically with group 7 atoms?

lose two electrons

gain two electrons

gain one electron

lose one electron

GCSE Chemistry Quiz

Good Luck!

Results

#1. What is the chemical symbol for gold?

#2. Which description most accurately describes covalent bonding

#3. What is the formula for the compound calcium nitrate which is made of calcium and nitrate ions (NO₃⁻)?

#4. What is the approximate radius of a nucleus?

#5. Complete the following equation describing a reaction with a metal carbonate and an acid: metal carbonate + acid → .... + .... + ....

#6. Why is graphite softer than diamond?

#7. In an experiment to measure the rate of photosynthesis of pondweed in a test tube, the number of bubbles (oxygen) produced per minute is used to determine the rate of reaction. What is this experiment actually measuring?

#8. What is the boiling temperature of water?

#9. Which description best describes a compound?

#10. What is the relative mass of an electron?

#11. What is the chemical symbol for mercury?

#12. Which of these is a problem with 3D ball and stick models?

#13. Complete the following equation describing a reaction with a metal and an acid: metal + acid → .... + ....

#14. What is the formula for the polyatomic ion ammonium?

#15. What is the chemical symbol for calcium?

#16. Alkalis produce an excess of what when they dissolve in water?

#17. Calculate the relative formula mass of copper oxide (CuO) to 2 decimal places. Copper Aᵣ = 63.5, Oxygen Aᵣ = 16.

#18. What is the mass number of an element?

#19. Which type of reaction transfers energy to the surroundings?

#20. Which of these describes the term "rate of reaction"?

#21. Lead has 4 stable isotopes. ²⁰⁴Pb (abundance - 1.4%), ²⁰⁵Pb (abundance - 24.1%), ²⁰⁷Pb (abundance - 22.1%) and ²⁰⁸Pb (abundance - 52.4%). Calculate the Aᵣ of lead. Answer to 2 decimal places.

#22. What is the chemical symbol for iron?

#23. What is the chemical symbol for xenon?

#24. When a mixture of rocks, salt and water is filtered, what will be the residue?

#25. What is the chemical symbol for chlorine?

#26. If covalent bonds are very strong, then why does water have a low melting point?

#27. Which types of atoms can be found in a pure piece of gold?

#28. Are metals usually malleable or brittle?

#29. Determine the empirical formula of glucose - C₆H₁₂O₆.

#30. Which of the following are uses for paper chromatography?

#31. What is the name of the phase change from solid to gas?

#32. H₂SO₄(aq) + Na₂O(s) → .... + ....

#33. Where is most of the mass of an atom?

#34. Do non-metals usually have a high or low density?

#35. Is it possible to control the rate of reaction?

#36. Which of the following are properties of ionic compounds?

#37. What are positive ions called?

#38. What is the formula for calcium hydroxide?

#39. Which of the following was the Rutherford Model of atomic structure?

#40. Which three particles are atoms composed of?

#41. Why did Ernest Rutherford's experiments with gold foil demonstrate that most of atoms consists of empty space?

#42. Why does graphite conduct electricity?

#43. What is the chemical symbol for oxygen?

#44. During crystallisation, there is a risk of spitting which could cause harm. Which of the following could reduce the risk?

#45. Calculate the empirical formula of a compound that contains 69.94g of Fe (Aᵣ - 55.85) and 30.06g of O (Aᵣ - 12.00).

#46. What is the chemical symbol for carbon?

#47. What are negative ions called?

#48. Paper chromatography is used to separate which types of materials?

#49. What is the chemical symbol for tin?

#50. What do group one atoms do when they bond ionically with group 7 atoms?

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