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CHEM1001 > Chapter One > Flashcards

Chapter One Flashcards

1
Q

Matter

A

anything that takes up space and weights something.

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2
Q

What is Chemistry?

A

It is the study of matter and it’s changes.

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3
Q

What are the main types of matter?

A

Pure substances and mixture of substances.

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4
Q

What are the three most common states of matter?

A

Solid, liquid and gas

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5
Q

A mixture that is mostly water is called..?

A

Aqueous Solution

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6
Q

What are the two types of pure substances?

A

Elements and Compounds

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7
Q

What are the two types of mixture substances?

A

Homogeneous and Heterogenous

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8
Q

What is the name of the modern day human?

A

Homo sapiens

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9
Q

Pure Substances

A

is. matter that is made up of only one type of substance and can be one of two types - elements or compounds.

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10
Q

Element

A

is the simplest type of matter because it is made up of only one type of atom.

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11
Q

Atom

A

is the smallest unit of. matter than can exist and keep its chemically unique characteristics.

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12
Q

Compound

A

is a pure substance that I made of two or more elements that are chemically joined together.

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13
Q

Mixture

A

a combination or two or ore substances

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14
Q

Homogeneous

A

composition is the same throughout.

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15
Q

Heterogeneous

A

composition is not uniform, but varies throughout.

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16
Q

Periodic Table - Group

A

A vertical column of elements

17
Q

Periodic Table - Row

A

A horizontal column of elements

18
Q

What are the four mostly common found elements in food?

A

Carbon, Hydrogen, Oxygen and Nitrogen

19
Q

Physical change

A

The form of matter is changed, but its identity or chemical formula remains the same

20
Q

Chemical change

A

When a substance undergoes a change.

Example: Plant using carbon dioxide and water to make sugar.

21
Q

Law of conservation of mass

A

Matter can neither be created or destroyed. Matter only changes from, so the amounts of matter on the reactant side and the product side must be equal.

22
Q

Standard SI unit for mass

A

kilograms (kg)

23
Q

Standard metric unit for mass

A

gram (g)

24
Q

Standard SI unit for volume

A

liter (L)

25
Q

Standard SI unit for length

A

meter (m)

26
Q

1 kg =

A

2.2 lbs

27
Q

Dimensional Analysis

A

The use of converting units to an equivalent unit

28
Q

Significant Figures

A

are the digits in a value known with certainty plus an estimated digit.

29
Q

Sig Figs- A digit is significant if it is

A
  • not a zero
  • a zero between nonzero digits
  • a zero at the end of a umber with a decimal point
30
Q

Sig Figs- A zero is NOT significant if it is

A
  • at the beginning of a number with a decimal point

- in a large number without a decimal point

CHEM1001 (1 decks)

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