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Science > Chemical Formulas > Flashcards

Chemical Formulas Flashcards

1
Q

A representation of a substance using symbols for its elements

A

Chemical Formula

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2
Q

A shorthand way to represent an element or compound

A

Chemical Formula

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3
Q

H2O

A

Water

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4
Q

C6H12O6

A

Sugar

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5
Q

NaCl

A

Salt

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6
Q

Located on the Periodic Table of Elements

A

Elements

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7
Q

Elements on the Periodic Table are Represented by ______________ letters

A

Capital

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8
Q

On the periodic table, each element contains how many letter symbols

A

1 or 2

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9
Q

The first letter of the element is capitalized and the second letter is ___________________

A

lower case

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10
Q

What is the chemical Formula for Rust

A

Fe2O3

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11
Q

How many elements are in 2HCO3

A

3

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12
Q

How many elements are in 6O2

A

1

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13
Q

How many elements are in 3NaC2H3O2

A

4

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14
Q

How many elements are in 4CO2

A

2

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15
Q

Molecules are represented by a _________________ - a number written in ___________ of the chemical formula

A

Coefficient, front

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16
Q

Located at the _________________ of a chemical formula

A

Beginning

17
Q

If there is no coefficient at the beginning of a chemical formula, then there is just _______ molecule

A

1

18
Q

How many molecules are in
3Fe2O3

A

3

19
Q

Chemical formula for Rust (iron oxide)

A

3Fe2O3

20
Q

Identify the number of molecules in
2HCO3

A

2

21
Q

How many molecules in
6O2

A

6

22
Q

How many molecules in
3NaC2H3O2

A

3

23
Q

How many molecules in
4CO2

A

4

24
Q

Represented by a __________________________ - a number written after the symbol of each element

A

Subscript

25
Q

If there is no subscript after an element’s symbol, then there is just _________ atom of the specific element

A

1

26
Q

_______ the atoms of each element in the chemical formula

A

Add

27
Q

___________ the number of atoms by the _______________ to determine the TOTAL number of atoms in the chemical formula

A

Multiply, coefficient

28
Q

How many atoms are in 2HCO3

A

10

29
Q

How many atoms are in 6O2

A

12

30
Q

How many atoms are in 3NaC2H3O2

A

24

31
Q

How many atoms are in 4CO2

A

12

32
Q

How many MOLECULES are in the chemical formula for Butane: 5C4H10

A

5

33
Q

How many ELEMENTS are in the chemical formula for Calcium Sulfate: 3CaSO4

A

3

34
Q

How many ATOMS are in the chemical formula for Potassium Chromate: 4K2CrO4

A

28

35
Q

How many MOLECULES, ELEMENTS, AND ATOMS are in the chemical formula for Glucose: C6H12O6

A

Molecules: 1
Elements: 3
Atoms: 24

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