Atom Insight: Chemistry Essentials Quiz

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Test your understanding of atoms, isotopes, and atomic structure.

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Atom Insight: Chemistry Essentials Quiz


Froggy Jumps Atom Insight: Chemistry Essentials QuizVersión en línea Test your understanding of atoms, isotopes, and atomic structure. por ALWA 1 What is the smallest unit of an element that retains its properties? a Molecule b Ion c Atom 2 Which subatomic particle carries a positive charge? a Proton b Neutron c Electron 3 What is the nucleus of an atom primarily made of? a Protons and neutrons b Quarks c Electrons only 4 Atomic number equals the number of which particle? a Electrons b Protons c Neutrons 5 Mass number is the sum of protons and __? a Electrons b Neutrons c Quarks 6 What is an isotope? a Different electrons only b Different protons, same neutrons c Same protons, different neutrons 7 Relative isotopic mass is referenced to which atom? a Oxygen-16 b Carbon-12 c Hydrogen-1 8 What is relative atomic mass? a Total number of protons b Total number of electrons c Weighted average of isotopes 9 Hydrogen has isotopes with mass numbers 1 and 2. What are they called? a Lamda and Sigma b Tritium and Helium c Protium and Deuterium 10 Which statement is true about isotopes? a Same chemical properties, different masses b Different chemical properties c Different atomic numbers 11 Bohr proposed that electrons move in __? a Orbits only b Random paths c Shells 12 Maximum electrons in the first shell is: a 2 b 8 c 18 13 Sodium with 11 electrons has electronic arrangement: a 1, 10 b 2, 9, 0 c 2, 8, 1 14 Which element has symbol 'Ne'? a Neon b Neptunium c Nickel 15 Which symbol belongs to Oxygen? a Og b Ox c O 16 Which element has atomic number 6? a Carbon b Nitrogen c Oxygen 17 Which symbol represents Sodium? a So b Sd c Na 18 Which pair are isotopes? a W and Y b W and X (same Z, different A) c X and Z 19 The nucleus is overall what charge? a Positive b Neutral c Negative 20 How many neutrons in 12C (mass number 12) with 6 protons? a 12 b 6 c 0 21 What does Z stand for in atomic symbol notation? a Electrons b Atomic number c Mass number 22 What does A stand for in atomic symbol notation? a Charge b Atomic number c Mass number 23 Chlorine has two isotopes with abundances 75% and 25%. Relative atomic mass is: a Approximately 33 b Approximately 35.5 c Approximately 37 24 Which statement is correct about elements and atoms? a An atom is made of many elements b An element is made of one type of atom c A molecule is an atom 25 Which particle is NOT in the nucleus? a Proton b Neutron c Electron 26 What is the symbol for Magnesium? a Md b Mn c Mg 27 Which element has the symbol 'Fe'? a Iron b Francium c Fluorine 28 Relative isotopic mass is simply the mass number when using Carbon-12 as reference. a Cannot determine b False c True 29 Arrangement of electrons fills from the innermost to outermost shell? a No b Only for noble gases c Yes 30 What is the electron arrangement for sodium (11 electrons)? a 2, 9, 0 b 1, 10 c 2, 8, 1 31 Which of these is a compound? a Water (H2O) b N2 c O2 32 Which term describes a substance with only one kind of atom? a Mixture b Element c Compound 33 What is the charge of a typical atomic nucleus? a Negative b Neutral c Positive 34 Which is NOT a noble gas? a Argon b Neon c Nitrogen 35 Which particle has negligible mass? a Proton b Neutron c Electron mass is tiny but nonzero; typically negligible here 36 What is the correct symbol for Potassium? a P b K c Pt 37 Which statement best describes mass number? a Sum of protons and neutrons b Total charge c Sum of electrons and protons 38 What does 'relative' imply in relative atomic mass? a Absolute mass only b Atomic number c Weighted average vs carbon-12 39 Which isotope concept explains identical chemical properties? a Different chemistry b Different protons c Isotopes have same chemistry 40 Which tool best predicts electron count in a shell? a 1n^2 rule b 2n^2 rule c 3n^2 rule 41 What is the mass of 1 amu approximately equal to? a Mass of a molecule b Mass of one proton or neutron c Mass of electron 42 Which element symbol is derived from Latin 'aurum'? a Pt b Au (Gold) c Ag 43 Which term means 'the mass relative to a carbon-12 atom'? a Absolute mass b Molar mass c Relative atomic mass 44 Which electron count is correct for neon (8 electrons)? a 2, 8 b 3, 5 c 1, 7 45 Which concept is shown by the diagram of electron shells? a Isotopic distribution b Electronic arrangement c Nuclear decay 46 Which sample has the same number of protons but different neutrons? a Allotropes b Isotopes c Ions 47 Which statement is true about the nucleus? a Is electron cloud b Occupies most of atom space c Contains almost all atomic mass 48 What does the term 'neutral' refer to in atoms? a Zero protons b Equal protons and electrons c No electrons 49 Which symbol is for Chlorine? a Cr b Cl c Cn 50 Which of these is NOT a symbol of the first 20 elements? a Uu b He c H 51 Which statement best defines a mixture? a Chemically bonded only b Physically combined substances c Pure elements only 52 What is a major difference between elements and compounds? a Compounds contain one type of atom b Elements contain one type of atom; compounds contain two or more c Elements are compounds 53 Which isotope pair demonstrates same Z but different A? a Alloys b Isotopes c Isomers 54 Which is the correct electronic arrangement for magnesium (12 electrons)? a 2, 4, 6 b 3, 9 c 2, 8, 2 55 Which element symbol 'Ca' stands for? a Cesium b Cadmium c Calcium 56 What do you call a substance with varied atoms not chemically bonded? a Mixture b Compound c Element 57 The relativeAtomicMass should be rounded to how many decimals? a One b Three c Two 58 Which of the following is an example of a noble gas? a Nitrogen b Oxygen c Argon 59 Where are electrons located in an atom? a Nucleus only b Electron cloud/orbitals c Inside protons 60 Which of these best describes 'atomic number'? a Number of protons b Number of electrons c Number of neutrons 61 What is the symbol for Helium? a Hl b He c Hi 62 In which unit is relative atomic mass commonly expressed? a Atomic mass units (amu) b Daltons only c Kilograms 63 Which statement is correct about protons and electrons in a neutral atom? a Protons exceed electrons b They are equal in number c Electrons exceed protons 64 Which isotope has a mass number of 12 and 6 protons? a Nitrogen-12 b Carbon-12 c Oxygen-12 65 Which term describes the weighted average mass of natural isotopes? a Relative atomic mass b Atomic weight c Molar mass 66 Which element has symbol 'Mg'? a Magnesium b Manganese c Gallium 67 What is the charge of the nucleus in a neutral atom? a Neutral b Positive c Negative 68 Which is a property of isotopes? a Different masses, similar chemical properties b Different electrons c Different protons 69 Which concept uses '2n^2' as a rule? a Molar mass calculation b Maximum electrons in shell n c Isotope abundance 70 What is the symbol for Silicon? a Si b Sn c SiR

Atom Insight: Chemistry Essentials Quiz

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Froggy Jumps

Atom Insight: Chemistry Essentials QuizVersión en línea

por ALWA

What is the smallest unit of an element that retains its properties?

Which subatomic particle carries a positive charge?

What is the nucleus of an atom primarily made of?

Atomic number equals the number of which particle?

Mass number is the sum of protons and __?

What is an isotope?

Relative isotopic mass is referenced to which atom?

What is relative atomic mass?

Hydrogen has isotopes with mass numbers 1 and 2. What are they called?

Which statement is true about isotopes?

Bohr proposed that electrons move in __?

Maximum electrons in the first shell is:

Sodium with 11 electrons has electronic arrangement:

Which element has symbol 'Ne'?

Which symbol belongs to Oxygen?

Which element has atomic number 6?

Which symbol represents Sodium?

Which pair are isotopes?

The nucleus is overall what charge?

How many neutrons in 12C (mass number 12) with 6 protons?

What does Z stand for in atomic symbol notation?

What does A stand for in atomic symbol notation?

Chlorine has two isotopes with abundances 75% and 25%. Relative atomic mass is:

Which statement is correct about elements and atoms?

Which particle is NOT in the nucleus?

What is the symbol for Magnesium?

Which element has the symbol 'Fe'?

Relative isotopic mass is simply the mass number when using Carbon-12 as reference.

Arrangement of electrons fills from the innermost to outermost shell?

What is the electron arrangement for sodium (11 electrons)?

Which of these is a compound?

Which term describes a substance with only one kind of atom?

What is the charge of a typical atomic nucleus?

Which is NOT a noble gas?

Which particle has negligible mass?

What is the correct symbol for Potassium?

Which statement best describes mass number?

What does 'relative' imply in relative atomic mass?

Which isotope concept explains identical chemical properties?

Which tool best predicts electron count in a shell?

What is the mass of 1 amu approximately equal to?

Which element symbol is derived from Latin 'aurum'?

Which term means 'the mass relative to a carbon-12 atom'?

Which electron count is correct for neon (8 electrons)?

Which concept is shown by the diagram of electron shells?

Which sample has the same number of protons but different neutrons?

Which statement is true about the nucleus?

What does the term 'neutral' refer to in atoms?

Which symbol is for Chlorine?

Which of these is NOT a symbol of the first 20 elements?

Which statement best defines a mixture?

What is a major difference between elements and compounds?

Which isotope pair demonstrates same Z but different A?

Which is the correct electronic arrangement for magnesium (12 electrons)?

Which element symbol 'Ca' stands for?

What do you call a substance with varied atoms not chemically bonded?

The relativeAtomicMass should be rounded to how many decimals?

Which of the following is an example of a noble gas?

Where are electrons located in an atom?

Which of these best describes 'atomic number'?

What is the symbol for Helium?