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Science GCSE > Chemistry > Flashcards

Chemistry Flashcards

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1
Q

What is the basic unit of all living organisms?

A

The cell

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2
Q

What is the smallest unit of a cell?

A

The atom

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3
Q

True or False: Atoms are made up of protons, neutrons, and electrons.

A

True

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4
Q

What is the charge of a proton?

A

Positive

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5
Q

What is the charge of an electron?

A

Negative

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6
Q

What is the charge of a neutron?

A

Neutral

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7
Q

Fill in the blank: The nucleus of an atom contains ______ and neutrons.

A

Protons

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8
Q

What is the atomic number of an element?

A

The number of protons in the nucleus

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9
Q

What is the atomic mass of an element?

A

The sum of protons and neutrons in the nucleus

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10
Q

What is the charge of an atom if it gains an electron?

A

Negative

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11
Q

What is the charge of an atom if it loses an electron?

A

Positive

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12
Q

What is the outermost part of an atom called?

A

Electron shell

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13
Q

True or False: Electrons closest to the nucleus have higher energy levels.

A

False

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14
Q

What is the term for atoms of the same element with different numbers of neutrons?

A

Isotopes

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15
Q

What type of bond involves the sharing of electrons between atoms?

A

Covalent bond

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16
Q

What type of bond involves the transfer of electrons from one atom to another?

A

Ionic bond

17
Q

What is the term for a charged atom?

A

Ion

18
Q

Fill in the blank: The atomic number is equal to the number of ______ in an atom.

A

Protons

19
Q

What is the term for an atom that has gained or lost electrons?

A

Ion

20
Q

What is the term for the outermost electron shell of an atom?

A

Valence shell

21
Q

What is the term for the attraction between oppositely charged ions?

A

Ionic bond

22
Q

What is the term for a molecule with an unequal distribution of charges?

A

Polar molecule

23
Q

What is the term for a molecule with an even distribution of charges?

A

Nonpolar molecule

24
Q

What is the term for a weak attraction between slightly positive and slightly negative regions of molecules?

A

Hydrogen bond

25
Q

What are elements?

A

An element is a fundamental item that can’t be easily broken into smaller pieces

26
Q

What is a compound?

A

A pure substance made from more than one type of element chemically bonded together

27
Q

What is the periodic table?

A

a table of the chemical elements arranged in order of atomic number, usually in rows, so that elements with similar atomic structure (and hence similar chemical properties) appear in vertical columns.

28
Q

What are electrons?

A

An electron is a negatively charged subatomic particle that can be either bound to an atom or free

29
Q

What are electrons?

A

An electron is a negatively charged subatomic particle that can be either bound to an atom or free

30
Q

What are protons?

A

The proton is a subatomic particle with a positive electrical charge

31
Q

What are neutrons

A

The neutron is one of the three subatomic particles that make up an atom. The neutron however does not have a charge.

Science GCSE (2 decks)

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