Quiz about Wed. Dec 18th assignment

Question 1

Is the equation balanced?: 2H₂O + O₂ --> 4MgO + 3Fe

Accepted Answer

no

Answer

yes

Question 2

The coefficient in 3H₂O is

Accepted Answer

3

Answer

6

Answer

5

Answer

2

Question 3

How many atoms of carbon (C) are in C₆H₁₂O₆?

Accepted Answer

6

Answer

3

Answer

12

Answer

24

Question 4

How many Sodium (Na) are in 6NaCl?

Accepted Answer

6

Answer

1

Answer

12

Question 5

How many Hydrogen are in 4H₂O?

Accepted Answer

8

Answer

6

Answer

2

Answer

4

Question 6

What is the left part of a chemical equation called?
2H_{2 +}O₂ --> 2H₂O

Accepted Answer

Reactants

Answer

Products

Answer

Yields

Answer

Chemical Equation

Question 7

What is the right part of a chemical equation called...
2H_{2 +}O₂ --> 2H₂O

Accepted Answer

Products

Answer

Reactants

Answer

Yields

Answer

Chemical Equation

Question 8

What is the little number after an element in a chemical equation called.
Example: H₂

Accepted Answer

Subscript

Answer

Coefficient

Answer

Atom

Answer

Equation

Question 9

Is the following equation balanced?...
Al + O₂ --> 2Al₂O₃

Accepted Answer

No!

Answer

Yes!

Question 10

How many elements are in C₆H₁₂O₆?

Accepted Answer

3

Answer

1

Answer

2

Answer

4

Question 11

What is the number before a chemical formula called?
Ex: 2H₂ + O₂ --> 2H₂O

Accepted Answer

Coefficient

Answer

Subscript

Answer

Atom

Answer

Equation

Question 12

In which of these compounds are there twice as many oxygen atoms as hydrogen atoms?

Accepted Answer

H2SO4

Answer

H3PO4

Answer

HClO3

Answer

H2O

Question 13

Determine whether the following equations is balanced or unbalanced. H₄+ O₂---> 2H₂O

Accepted Answer

Balanced

Answer

Unbalanced

Question 14

Which coefficients would balance this chemical equation? _Fe₂O₃---> _Fe + _O₂

Accepted Answer

2,4,3

Answer

2,1,2

Answer

1,1,1

Answer

1,3,2

Question 15

Which coefficients would balance this chemical equation? _K + _Cl₂---> _KCl

Accepted Answer

2,1,2

Answer

1,1,1

Answer

1,2,2

Answer

1,1,2

Question 16

What is the arrow in a chemical equation...
H_{2 +}O --> H₂O

Accepted Answer

Yields

Answer

Reactants

Answer

Products

Answer

Chemical Equation

Question 17

How many oxygen atoms are in this chemical formula?

Accepted Answer

6 oxygen atoms

Answer

2 oxygen atoms

Answer

3 oxygen atoms

Answer

4 oxygen atoms

Question 18

In an exothermic reaction, heat is ...

Accepted Answer

given out

Answer

taken in

Question 19

In an endothermic reaction, heat is ...

Accepted Answer

taken in

Answer

given out

Question 20

If a chemical reaction is EXOTHERMIC, the temperature of the surrounding would....

Accepted Answer

Increase

Answer

Stay the same

Answer

Decrease

Question 21

In an endothermic reaction the reaction is releasing energy.

Accepted Answer

False

Answer

True

Question 22

During an endothermic reaction in a beaker if we are part of the surroundings and touched the beaker, it would feel _______.

Accepted Answer

Cold

Answer

Warm

Question 23

The illustration shows cell respiration. Is the overall reaction of cell respiration an Endothermic or an Exothermic reaction?

Accepted Answer

Exothermic

Answer

Endothermic

Question 24

Baking bread and cooking an egg require an input of heat. These would be examples of....?

Accepted Answer

Endothermic processes

Answer

Exothermic processess

Answer

None of these

Question 25

Photosynthesis takes place inside of leaf cells. Sunlight is required. Is this an Exothermic or an Endothermic reaction?

Accepted Answer

Endothermic

Answer

Exothermic

Question 26

What instrument would you use to detect an endothermic or exothermic reaction?

Accepted Answer

thermometer

Answer

triple beam balance

Answer

ruler

Wed. Dec 18th assignment

28 questions

Is the equation balanced?: 2H₂O + O₂ --> 4MgO + 3Fe

The coefficient in 3H₂O is

How many atoms of carbon (C) are in C₆H₁₂O₆?

How many Sodium (Na) are in 6NaCl?

How many Hydrogen are in 4H₂O?

What is the left part of a chemical equation called?
2H_{2 +}O₂ --> 2H₂O

What is the right part of a chemical equation called...
2H_{2 +}O₂ --> 2H₂O

What is the little number after an element in a chemical equation called.
Example: H₂

Is the following equation balanced?...
Al + O₂ --> 2Al₂O₃

How many elements are in C₆H₁₂O₆?

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Wed. Dec 18th assignment

28 questions

Is the equation balanced?: 2H2O + O2 --> 4MgO + 3Fe

The coefficient in 3H2O is

How many atoms of carbon (C) are in C6H12O6?

How many Sodium (Na) are in 6NaCl?

How many Hydrogen are in 4H2O?

What is the left part of a chemical equation called?2H2 + O2 --> 2H2O

What is the right part of a chemical equation called...2H2 + O2 --> 2H2O

What is the little number after an element in a chemical equation called.Example: H2

Is the following equation balanced?...Al + O2 --> 2Al2O3

How many elements are in C6H12O6?

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Similar Resources on Wayground

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Discover more resources for Science

Is the equation balanced?: 2H₂O + O₂ --> 4MgO + 3Fe

The coefficient in 3H₂O is

How many atoms of carbon (C) are in C₆H₁₂O₆?

How many Hydrogen are in 4H₂O?

What is the left part of a chemical equation called?
2H_{2 +}O₂ --> 2H₂O

What is the right part of a chemical equation called...
2H_{2 +}O₂ --> 2H₂O

What is the little number after an element in a chemical equation called.
Example: H₂

Is the following equation balanced?...
Al + O₂ --> 2Al₂O₃

How many elements are in C₆H₁₂O₆?