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Science 9 > Chemistry Deffinition 9 > Flashcards

Chemistry Deffinition 9 Flashcards

1
Q

Molecules definition

A

Two or more atoms connected by chemical bonds

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2
Q

Covalent compound definition

A

Non-metal bonded to a non-metal

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3
Q

Matters definition

A

Anything that has mass or volume

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4
Q

Compound definition

A

Two or more different atoms combined.

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5
Q

Element definition

A

A substance that can’t be broken down by non nuclear reactions

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6
Q

Suspension definition

A

A heterogeneous mixture of a finely distributed solidin a liquid

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7
Q

Solution definition

A

A homogeneous mixture of one or more solutes dissolved in a solvent

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8
Q

Pure substance definition

A

A substance that has a fixed chemical composition throughout

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9
Q

Heterogeneous definition

A

A mixture in which the composition is not uniform throughout the mixture

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10
Q

Homogeneous definition

A

A mixture with uniform

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11
Q

Mixture definition

A

Made when two or more substances are combined.

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12
Q

Ionic compound definition

A

Metal bonded to a non metal

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13
Q

Deltons atomic theory 1

A

All matter is made of atoms to small to see

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14
Q

Daltons atomic theory 2 1808

A

Each element has its owns atoms, atoms of the same element have the same mass

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15
Q

Daltons atomic theory 3 1808

A

Compounds are created when atoms of different elements link to form compound atoms

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16
Q

Daltons atomic theory 4

A

Atoms cannot be created or destroyed

17
Q

5 families and property’s of each

A

Alkalis
Alkaline
Halogen
Noble gases
Hydrogen

18
Q

What are families

A

Families are verticals columns on the periodic table

19
Q

What are periods

A

Horizontal rows on the periodic table

20
Q

What is the max number of electrons

A

2,8,8,1818,32,32

21
Q

What is a trend on the periodic table

A

It’s a pattern on the periodic table

22
Q

What are examples of element

A

Metals, metaloid, non metal

23
Q

Who is Thomson

A

He discovers electron and made the plum putting model

24
Q

Who is Rutherford

A

He found out that most of the atom is empty and discovers about the nucleus

25
Q

Who is Bohr

A

He made the Bohr model

26
Q

What is a isotopes

A

A version of elements with different number of neutrons and therefore different mass

27
Q

Mendeleev

A

Organised the first periodic table and left predictive gaps

28
Q

Multivalent metals

A

A element with two or more charges

29
Q

What is a binary ionic

A

contains an ion that is a metal (cation) and an ion that is a nonmetal

30
Q

What is atomic number

A

Equals to number of protons

31
Q

Atomic mass

A

Protons + neutrons

Science 9 (7 decks)

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