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Classification of Matter Chapter 1 Smartwork 5 Part 1

Chemistry33 CardsCreated 4 months ago

This flashcard set helps you identify whether a substance is an element or a compound. It includes common examples like gold, helium, ethanol, and sodium chloride to reinforce your understanding of basic matter classification.

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Categorize each of the following five substances as either an element or a compound. Gold, Helium, Nitrogen

Element

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Key Terms

Term
Definition

Categorize each of the following five substances as either an element or a compound. Gold, Helium, Nitrogen

Element

Categorize each of the following five substances as either an element or a compound. Ethanol, Sodium Chloride

Compound

Physical changes and which represent chemical changes? N2(l)-->N2(g)

Physical Change

Physical changes and which represent chemical changes? I2(s)-->I2(g)

Physical Change

Physical changes and which represent chemical changes? 2HsOs(aq)-->2H2O(l)+Os(g)

Chemical Change

2.45pg=____x 10 to the ____power g

2.45 -12

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Classification of Matter Chapter 1 Smartwork 5 Part 1
TermDefinition

Categorize each of the following five substances as either an element or a compound. Gold, Helium, Nitrogen

Element

Categorize each of the following five substances as either an element or a compound. Ethanol, Sodium Chloride

Compound

Physical changes and which represent chemical changes? N2(l)-->N2(g)

Physical Change

Physical changes and which represent chemical changes? I2(s)-->I2(g)

Physical Change

Physical changes and which represent chemical changes? 2HsOs(aq)-->2H2O(l)+Os(g)

Chemical Change

2.45pg=____x 10 to the ____power g

2.45 -12

55.0km=___x10 to the ___power m

5.50 4

Precise

Refers to how consistently repeated measurements yield the same result.

Accurate

Refers to how close a measurement is to the true or accepted value.

A sports-utility vehicle has an average mileage rating of 17.00 miles per gallon. How many gallons of gasoline are needed for a 391.0 -mile trip?

23 gal

Pure Solid

A pure solid consists of only one type of element or compound with a uniform structure. It has consistent physical and chemical properties throughout.

Pure Liquid

A pure liquid contains only one type of molecule with uniform composition throughout. It has definite boiling and melting points.

Solution

A homogeneous mixture of two or more substances uniformly dispersed. It has a consistent composition throughout.

Significant figures

Digits in a number that carry meaning for its precision, including all certain digits and the first uncertain digit.

Mixture of compounds

A combination of two or more different compounds mixed physically, not chemically bonded.

Mixture of elements

A physical blend of two or more different elements, each retaining its own properties.

The roadway is six lanes wide.

a. number of limited precision

b. exact number

b. exact number

The Width of the bridge is 27.4.
a. number of limited precision
b. exact number

a. number of limited precision

The bridge has a mass of 3.808 ×× 108 kg.
a. number of limited precision
b. exact number

a. number of limited precision

The length of the bridge is 2740 m.
a. number of limited precision
b. exact number

a. number of limited precision

The toll for a car traveling south increased to $6.00 on September 1, 2008.
a. number of limited precision
b. exact number

b. exact number

Write the molecular formula of glucose.

C6H12O6

Write the molecular formula of lactic acid.

C3H6O3

Which two of the following foods are heterogeneous mixtures?
A. Snicker's bar
B. milk
C. strawberry Jello
D.M&M's
E.Cool Whip

A. Snicker's Bar
D. M&M's

Choose ALL of the physical properties that gold and silver share.
A.boiling point
B.density
C.melting point
D.ability to conduct electricity
E.ability to conduct heat
F.color
G.malleabilityH.luster

D. ability to conduct electricity
E. ability to conduct heat
G. malleability
H. Luster

Which of the following are physical rather than chemical properties of hydrogen gas (H2)?
A.H2 gas does not conduct electricity.
B.At room temperature, its density is less than that of any other gas.
C.Liquefied H2 boils at a very low temperature (-253.7°C).
D.It reacts vigorously with oxygen (O2) to form water.

A.H2 gas does not conduct electricity.
B.At room temperature, its density is less than that of any other gas.
C.Liquefied H2 boils at a very low temperature (-253.7°C).

The boiling point of water
A. extensive
B. intensive

B. intensive

The amount of heat energy in Lake Michigan
A. extensive
B. intensive

A. extensive

The mass of water in the oceans
A. extensive
B. intensive

A. extensive

The density of lead
A. extensive
B. intensive

B. intensive

The reactivity of nitric acid with sodium hydroxide
A. extensive
B. intensive

B. intensive

1.91 x 2.0=

3.8

1.4310 / 0.331 =

4.32