Periodic Table
Atomic Structure
Reactions
Balancing Equations
100

What is the Atomic Number for Oxygen?

A. 8

B. 7

C. 11

D. 2

A. 8

100

which two subatomic particles are located in the nucleus of an atom?

Protons and Neutrons 

100

What are electrons?

A. a positively charged atom

B. a negatively charged atom

C. involved when atoms bond

D.  both B and C

D. both B and C

100

A balanced chemical equation is in accordance with:

A) Avogadro's Law

B) Law of constant proportion

C) Law of conservation of mass

D) Law of gaseous volumes

C) Law of conservation of mass

200

What is the chemical element for the symbol B?

Boron

200

If an atom has 35 protons in the nucleus, how many electrons will it have orbiting the nucleus?

35

200

The process of burning fossil fuel to release energy is called what?

A. Fission

B. Fusion

C. Combustion

D.  None of the above

C. Combustion

200

4Al + 3O2 → xAl2O3. Find 'x' 

A) 3

B) 2

C) 4 

D) 5

B) 2

300

What is the Atomic symbol for Iron

Fe

300

How many electrons does potassium have?

A) 18 electrons

B) 19 electrons

C) 15 electrons

D) 20 electrons

B) 19 electrons

300

What chemical reaction takes place when electricity is passed through water?

A. Displacement

B. Combination

C. Decomposition

D. Double Displacement

C. Decomposition

300

Which of the following reactions is not balanced ?

A) 2NaHCO3⟶Na2CO3+H2O+CO2

B) 2C4H10+12O2⟶8CO2+10H2O

C) 2Al+6H2O⟶2Al(OH)3+3H2

D) 4NH3+5O2⟶4NO+6H2O


B) 2C4H10+12O2⟶8CO2+10H2O
400

What is the chemical element for the symbol Fl?

A. Francium

B. Fermium

C. Fluorine

D.  Flerovium

D.  Flerovium

400

What element has 26 electrons, 29 neutrons, 26 protons?

A) Cu (Copper)

B) B (Boron)

C) Fe (Iron)

D) S (Sulfur)

C) Fe (Iron)

400

Choose one that is an example of a physical and chemical change.

A. Sublimation of dry ice

B. Burning a candle

C.  Rusting of Iron

D. Evaporating water

B. Burning a candle

400

__Mg(OH)2+ __HCl→ __MgCl2+ __H2O 

1Mg(OH)2+2HCl→1MgCl2+2H2O

500

What year was the Periodic Table invented?

A. 1900

B.1687

C.1869

D.1845

C.1869

500

What are isotopes?

A)Atoms with the same number of protons but a different number of neutrons

B)Compounds with the same molecular formulae but different structural formulae

C)Atoms with the same mass number but different atomic number

A) Atoms with the same number of protons but a different number of neutrons

500

In the reactions: C + 4HNO3 → CO2 + 2H2O + 4NO3 HNO3 acts as

A) An oxidising agent

B) AN acid

C) A reducing agent

D) None of them

A) An oxidising agent

500

BCl3(g)+H2(g)→HCl(g)+B(s) When the equation for the reaction represented above is balanced and all the coefficients are reduced to lowest whole number terms, the coefficient for HCl is: 

A) 1

B) 2

C) 3

D) 4

E) 5

F) 6

F) 6

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