Test
MODULE 2 CHEMISTRY
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Preguntas del test (57)
1An atom with 3 free electrons in its outer shell is said to be :
- ACovalent
- BPentavalent
- CTrivalent
2What is the mass number of an element?.
- ANumber of electrons and protons.
- BNumber of neutrons and protons.
- CNumber of electrons and neutrons.
3The splitting of a chemical compound is called what?
- ABombardment.
- BSynthesis.
- CAnalysis.
4What is the atomic number of an element?
- AThe number of neutrons in the atom
- BThe number of electrons in the atom
- CThe number of protons in the atom
5An atom with 5 free electrons is said to be
- APentavalet
- BCovalent
- CTrivalent
6An atom consists of :
- AProtons, neutron and electrons
- BProtons and electrons
- CProtons and neutrons
7The maximum number of electrons in the inner shell of an atom is
- A8
- B2
- C4
8The mass of a proton equals the mass of a
- ANeutron
- BBeta particle
- CElectron
9Catalysts :
- ASpeed up reactions
- BSpeed up and slow down reactions
- CSlow down reactions
10If the outer shell of an atom is full the the element is
- AUnstable / reactive
- BA good conductor
- CPractically inert.
11Molecules of the same compound are held together by
- ACohesive forces
- BAdhesive forces
- CGravitational forces
12Oxygen has a valency of
- A2
- B6
- C8
13The further from the nucleus the shells are in an atom
- AThe shells retain the same spacing from each other
- BThe closer the shells get to each other
- CThe further the shells get from each other
14What determines an element's identity?.
- AThe number of neutrons
- BThe number of electrons
- CThe number of protons
15An isotope of an element will have more/less _________ than usual
- AElectrons
- BNeutrons
- CProtons
16The smallest part of an element is
- ACompound
- BAn Atom
- CA Molecule
17The nucleus of an atom contains
- AProtons and electrons.
- BProtons and neutrons.
- CElectrons and neutrons
18What is atomic mass?.
- ANumber of neutrons.
- BNumber of protons plus the number of neutrons
- CNumber of protons
19A solid melted into a liquid will take up
- ALess space
- BThe same amount of space
- CMore space.
20What form of heat is used to turn a solid into a liquid?
- ASpecific heat
- BCoefficient of heat
- CHeat of fusion
21Change from solid to gas state without going through liquid state is called.
- ATransformation
- BSublimation.
- CState leap
22What is the smallest particle of matter that can exist in nature?
- AA molecule
- BAn isotope
- CAn atom
23A positive ion
- AHas extra electrons
- BHas missing electrons
- CIs a radioactive isotope
24The isotope of a carbon atom c14 to c12 will have
- ASame numbers of neutrons
- BSame numbers of protons
- CSame number of electrons
25If an atom has 2 protons, how many electrons will it have?
- A1
- B8
- C2
26A molecule with like atoms is said to be a
- ANeutroid
- BCompound
- CElement
27Two elements in the same substance is said to be a :
- AMixture
- BElement
- CCompound
28The number of protons in an atom is equal to the number of.
- AElectrons
- BNeutrons
- CMass number
29The charge of an electron is
- ANeutral
- BNegative
- CPositive
30A valance electron is an electron
- AIn the innermost shell
- BIn the outermost shell
- CWhich is not within an atom
31Molecules of unlike atoms are combined by their.
- AAdhesive force.
- BMagnetic force
- CCohesive force
32What is the difference between hydrogen, deuterium and tritium?.
- AThe number of electrons
- BThe number of protons
- CThe number of neutrons
33The smallest material in the universe is.
- AAn ion
- BHelium
- CHydrogen
34There are solids, liquids and gases present in the universe and every unit of theirs occupy some space. This is called
- AMatter.
- BCompound.
- CMass
35An atom deficient of a valency electron is deficient
- AOf an electron in the outer shell.
- BOf a neutron in the outer shell
- COf an electron in the inner shell
36The maximum number of electrons in the second shell is.
- A4
- B8
- C2
37What does an oxygen atom consist of?.
- AProtons, neutrons and electrons
- BProtons and electrons
- CProtons and neutrons
38Surface molecular attraction between two different molecules is
- AAdhesive
- BGravitational
- CCohesive
39The atomic mass number is the number of
- AProtons plus electrons.
- BNeutrons plus electrons
- CProtons plus neutrons
40A catalyst in a chemical reaction does what?
- ACan either speed it up or slow it down
- BSpeeds it up
- CSlows it down
41What is the number of electrons in the inner-most shell of an atom?
- A4
- B8
- C2
42What form of heat is used to turn a solid into a gas?
- ASensible heat
- BSpecific heat
- CLatent heat
43The heat required to change a liquid to a gas at constant temperature is the heat of.
- AFusion
- BCondensation
- CVapourisation
44An atom with a full outer shell is
- APractically inert
- BGood insulator
- CA good conductor
45An element with a full valence shell is.
- AVery reactive
- BGood conductor
- CInert
46A substance of two or more different atoms is
- AA neutrino
- BAn isotope
- CA chemical compound
47An atom with 5 electrons in its outer shell is.
- ATrivalent
- BPentavelent
- CCovalent
48Protons have
- ANo charge
- BPositive charge
- CNegative charge
49Producing a compound from commonly available materials is.
- ASynthesis
- BAnalysis
- CBombardment
50A different number of nucleons in the nucleus of atoms would represent
- ASemiconductor
- BIsotopes
- CIsotones
51Molecules of matter are in constant motion. The amount of vibration or motion is dependent on.
- ATemperature
- BVolume
- CPressure
52When a chemical change takes place, the smallest particle indivisible in an element is called.
- AAn atom
- BAn electron
- CA neutron
53A nucleus of an atom consists of.
- APositively charged particles
- BA nucleus and normally has no overall charge at all and so is neutral
- CNegatively charged particles
54A compound is a
- AMixture of more than one element which are chemically bonded together
- BSolution (either liquid or solid) of elements or mixtures of elements to form a new material
- CMixture of more than one element which are mixed together
55A compound is a
- AMixture of more than one element which are chemically bonded together
- BSolution (either liquid or solid) of elements or mixtures of elements to form a new material
- CMixture of more than one element which are mixed together
56Select the correct statement from the following
- ATemperature is the only factor which can affect the state in which matter exists
- BMatter can only exist in one of three states
- CAs temperature rises a solid will always become a liquid and then a gas
57Isotopes of an element havev
- AA different atomic number
- BThe same number of neutrons but a different number of protons
- CThe same number of protons but a different number of neutrons
Información
- Descripción
- EASA PART 66 B1
- Autor
- Dominik Folnozic
- Idioma
- English
- Visitas
- 1
- Etiquetas
- Valoración
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