Atomic Structure

Atomic structure

Close Window

Atomic Structure Review

Multiple-choice exercise

Choose the correct answer for each question.Show all questions

<= 1 / 18=>

1. Most of the mass of the atom can be found in the:

A. ? electron cloud

B. ? nucleus

C. ? charges

D. ? electrons

2.

Close Window

1. The laws of electrostatics consistently demonstrate that opposite charges:

A. ? attract

B. ? repel

C. ? destroy one another

2. The charge and mass number of an electron are:

A. ? charge = +1, Mass number = 1

B. ? charge = -1, Mass number = 0

C. ? charge = +1, Mass number = 0

D. ? charge = 0, Mass number = 1

3. Of the basic atomic particles, the one that would be attracted to a negatively charged metallic plate is the:

A. ? neutron

B. ? electron

C. ? proton

4. The charge and mass number of a proton are:

A. ? charge = +1, Mass number = 0

B. ? charge = +1, Mass number = 1

C. ? charge = -1, Mass number = 0

D. ? charge = 0, Mass number = 1

5. The atomic number of an element is equal to:

A. ? the number of protons plus the number of neutrons

B. ? the number of neutrons in the atom

C. ? the number of protons in the atom

D. ? the number of protons plus the number of electrons

6. The atomic number of an element is equal to:

A. ? the number of protons plus the number of neutrons

B. ? the number of neutrons in the atom

C. ? the number of protons in the atom

D. ? the number of protons plus the number of electrons

7. The nucleus of the atom is held together by:

A. ? magnetism

B. ? nuclear forces

C. ? electrostatic attraction

D. ? electrons

8. The laws of electrostatics consistently demonstrate that "like" (identical) charges:

A. ? destroy one another

B. ? repel

C. ? attract

Close Window




<= 10 / 18=>

1. The region labeled "X" in the diagram has a charge that is:

A. ? positive

B. ? neutral

C. ? negative

2.

Close Window

Close Window




<= 11 / 18=>

1. The letter "Y" in the diagram above marks the:

a.

Location of the neutrons

Electron cloud

Region of greatest density

Location of the protons

Nucleus

Check

Close Window 1. Isotopes (such as hydrogen-1, hydrogen-2, and hydrogen-3) are atoms of the

same element that differ in:

a.

the number of neutrons in the nucleus

the mass number

the atomic number

the number of electrons

the number of protons in the nucleus

The mass number of an atom is determined by:

A. ? adding the neutrons and electrons

B. ? the number of protons only

C. ? adding the neutrons and protons

D. ? adding the protons and electrons

Close Window




<= 14 / 18=>

1.

The region labeled "Y" in the diagram has a charge that is:

A. ? positive

B. ? neutral

C. ? negative

Close Window 1. Which of the following descriptions apply to the nucleus?

a.

Dense

Positively charged

Mostly empty space

Small

The nucleus of most atoms is made up of:

A. ? protons and neutrons

B. ? protons and electrons

C. ? neutrons and electrons

D. ? electrons and protons

2. The _______________ constitute(s) most of the volume of an atom.

A. ? protons

B. ? electron cloud

C. ? nucleus

D. ? neutrons

3. The _______________ constitute(s) most of the volume of an atom.

A. ? protons

B. ? electron cloud

C. ? nucleus

D. ? neutrons

Atomic Structure Questions

Which is the smallest sub-atomic particle?

a. Proton

b. Neutron

c. Electron 2. Which sub-atomic particle has a neutral charge?

a. Proton

b. Neutron

c. Electron 3. What does the atomic number measure?

a. Protons

b. Neutrons

c. Sum of Neutrons and Protons 4. Avogadro's Number is:

a. 12

b. 6.02 x 1023

c. 60000000

d. 3.141579

e. 6.92 x 1024 5. Two isotopes of Si-27 and Si-31, both would be expected to have the same:

a. half-life

b. nuclear charge

c. atomic mass

d. number of neutrons

e. decay particles

Corrosion and rusting

What is the difference between corrosion and rust?

1.The following factors plays a vital role in corrosion process

A,temperature.

b.solute concentrationc.bothd.none

2.To slow the corrosion of iron you could

a. Connect it to a piece of leadb. Wrap tin around it

c. Connect iron to a negative terminal of a power sourced. Connect iron to a postive terminal of a power source

3.why ships that have sunk in deep areas of the oceans hardly rust at all?

4.sacrifical protection is used to stop railways lines rusting.

a

<=backREPEAT QUIZMy GCSE Science-CHEMISTRY Revision Q Index + ALL LINKS

A GCSE/IGCSE random multiple choice science-CHEMISTRY

QUIZ Questions on THE EXTRACTION OF METALS

(higher/harder level HT)

* Click [?] A-D choice. * Metal Extraction Revision Notes * AQA * CCEA * Edexcel * OCR 21stC * OCR Gateway * WJEC * EMAIL comment?query - quote Q ref [me-xx] * Updated Doc Brown Chemistry updated June 19th

2009 *

Show all 10 random questions previous Q 6 / 10next Q

mailto:[email protected]?subject=MextractQmcH-HP6

mailto:[email protected]?subject=MextractQmcH-HP6

1.

Copper is purified by the electrolysis of copper(II) sulphate solution using copper electrodes. All the chemical changes occur on the surface of the electrodes. The formula for copper(II) sulphate is CuSO4. Which word describes the process happening on the surface of the positive electrode? [me-47]

Copper is purified by the electrolysis of copper(II) sulphate solution using copper electrodes. All the chemical changes occur on the surface of the electrodes. The formula for copper(II) sulphate is CuSO4. Which word describes the process happening on the surface of the negative electrode? [me-48]

B.[A.] Which metals is purified by electrolysis? [me-69]

C.[A.] ? iron

D.[B.] ? copper

E.[C.] ? aluminium

F.[D.] ? gold

2.[7.]



A GCSE/IGCSE random multiple choice science-CHEMISTRY

QUIZ Questions on THE EXTRACTION OF METALS (foundation/easier level FT)

* Click [?] A-D choice. * Metal Extraction Revision Notes * AQA * CCEA * Edexcel * OCR 21stC * OCR Gateway * WJEC * EMAIL comment?query - quote Q ref [me-xx] * Updated Doc Brown Chemistry updated June 19th

2009 *

Show all 10 random questions previous Q 7 / 10next Q

mailto:[email protected]?subject=MextractQmcF-HP6

mailto:[email protected]?subject=MextractQmcF-HP6

1.

Which metal is found as the free element in the Earth's crust? [me-79]

A. ? gold

B. ? magnesium

C. ? sodium

D. ? chromium

2.[8.]

A.


Documents

Atomic Structure