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Science > 4.1 Elements, Mixtures, And Compounds > Flashcards

4.1 Elements, Mixtures, And Compounds Flashcards

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1
Q

Element

A

A pure substance that do not be broken down into any other substance by physical or chemical means. (A pure substance is a substance in which there is only one type of particle)

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2
Q

What are Elements made up of?

A

The smallest possible piece of matter is the atom.

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3
Q

Atom

A

The basic particle from which all elements are made. Different elements are different because they contain different atoms.

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4
Q

Elements abbreviations

A

Elements are represented by 1 or 2 letters, often from the Latin or Greek name for the element. The first letter is capitalized, the second letter is lowercase.

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5
Q

Light for gold

A

“Aurum” - Au

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6
Q

Silver

A

“Argentum” - Ag

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7
Q

Iron

A

“Ferric” - Fe

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8
Q

Sodium

A

Na

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9
Q

Oxygen

A

O

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10
Q

Hydrogen

A

H

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11
Q

Calcium

A

Ca

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12
Q

Chlorine

A

Cl

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13
Q

Carbon

A

C

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14
Q

Sulfur

A

S

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15
Q

Characteristic properties

A

Each element can be identified by its own characteristic properties. For example, physical properties like boiling point, melting point, and density; and chemical properties such as reactivity with acid.

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16
Q

Classifications of Matter

A

Element, compound, or mixture

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17
Q

Compounds

A

A pure substance made up of two or more of elements chemically combined.

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18
Q

Chemical bond

A

A force of attraction between two or more atoms.

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19
Q

Molecule (w/example)

A

A particle made up of two or more atoms. These are written by chemical formulas.
Example: a molecule of the compound water is H2O. A molecule of the compound oxygen is O2.
2

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20
Q

Chemical formulas

A

Shows the elements in the compound and the ratio of their atoms.

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21
Q

Properties of chemically combined elements

A

When elements are chemically combined, they form compounds having properties that are different from those of the unconvinced elements.

22
Q

NaCl

A

Table Salt

23
Q

Fe2O3

A

Rust

24
Q

H2O

A

Water

25
Q

NaHCO3

A

Baking Soda

26
Q

Ag2O3

A

Tarnish

27
Q

C6H12O6

A

Glucose

28
Q

H2SO4

A

Sulfuric acid

29
Q

HC2H3O2

A

Vinegar (acetic acid)

30
Q

O2

A

Oxygen

31
Q

O3

A

Ozone

32
Q

NH3

A

Ammonia

33
Q

CO2

A

Carbon Dioxide

34
Q

Mixture

A

Made up of two or more substances that are together in the same place but are not chemically combined.

35
Q

Mixtures differences from pure substances

A

Each substance in a mixture keeps its individual properties (no chemical change). The parts of a mixture are not combined in a set ratio.

36
Q

Types of mixtures

A

Heterogeneous and homogeneous

37
Q

Heterogeneous

A

Different parts of the mixture are visible.

Examples: Raisin Bran, snow globe, jelly

38
Q

Homogeneous

A

Substances in these mixtures are so evenly mixed you cannot see the different parts.
Examples: salt water, seltzer, mayonnaise

39
Q

Solutions

A

One part (solute) is dissolving into the other part (solvent).

40
Q

Mixture

A

Made up of two or more substances that are together in the same place but are not chemically combined.

41
Q

Mixtures differences from pure substances

A

Each substance in a mixture keeps its individual properties (no chemical change). The parts of a mixture are not combined in a set ratio.

42
Q

Types of mixtures

A

Heterogeneous and homogeneous

43
Q

Heterogeneous

A

Different parts of the mixture are visible.

Examples: Raisin Bran, snow globe, jelly

44
Q

Homogeneous

A

Substances in these mixtures are so evenly mixed you cannot see the different parts.
Examples: salt water, seltzer, mayonnaise

45
Q

Solutions

A

One part (solute) is dissolving into the other part (solvent).

46
Q

Solubility

A

A measure of how much solute can dissolve in a given solvent at a particular temperature. (Soluble)

47
Q

Suspensions

A

A mixture in which particles are dispersed throughout a liquid or gas but are too large to stay that way so they settle out. Example: snow globe

48
Q

Colloid

A

Uniformly mixed but one part is suspended in the other, does not settle or dissolve. Scatters light (opaque). Examples: milk, ooblick, fog, jello

49
Q

Separating mixtures

A

Compounds can be difficult to separate, but mixtures are usually easy because each component keeps it own properties.

50
Q

Methods of separating mixtures

A

Filtering, magnetism, evaporation, distillation, sifting, straining, centrifuge

Science (12 decks)

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