Free Printable Atomic Structure & Chemical Bonding

Worksheets

Atomic Structure & Chemical Bonding

Total questions: 24

Worksheet time: 15mins

Name

Class

Date

______________, ______________ & ______________ discovered electron, proton and neutron respectively.

( sir names only)

(a)

Cathode rays produce a …. fluorescence.

Greenish

Greenish-yellow

Reddish

Some colored

The name electron was given by...

Johnson Stoney

Johnson Electrony

Stephen Johnson

Johnson & Johnson

Which of the following is the best evidence that the particles that make up a cathode ray had a negative charge?

The particles were produced by many different metals.

The ray was deflected toward a positive electric field.

Line emission spectra for an element are always the same.

The ray caused a phosphorescent screen to glow.

Which of the following is/are conclusions based on Rutherford’s gold foil experiment?

Atom is mostly empty space

The nucleus is positively charged

The atom has a small dense nucleus

All answers are correct

He found that electrons have specific amounts of energy and move in specific orbits around the nucleus, like planets orbiting the sun.

J.J. Thomson

Ernest Rutherford

Niels Bohr

James Chadwick

Which of the following was not part of John Dalton's theory of an atom?

Matter can be created and destroyed

All atoms of the same element are exactly alike

Every compound is composed of atoms of different elements in a specific ratio

All elements are composed of atoms that can not be divided

The smallest part of the element with the properties of the element is the...

electron

quark

atom

proton

Whose model suggested that negative particles were mixed in with positively charged material - like seeds in a watermelon?

J.J. Thomson

Ernest Rutherford

Niels Bohr

Albert Einstein

10.

Most of the mass in an atom is made up of _____________________?

protons and electrons

protons and neutrons

neutrons and electrons

electrons and quarks

11.

In the gold foil experiment, most of the positively charged alpha particles passed through the gold foil, but some were deflected or bounced back. What did we conclude because of this?

Atoms are small indivisible spheres

Atoms are mostly empty space with a small, dense, positive center

Atoms have negatively charged particles which orbit the nucleus

Light is a wave, not a particle

12.

Rutherford's model failed to explain the (a) of an atom.

13.

Which atomic model is this?

Bohr's Atomic Model

Genzel and Geis's Atomic Model

Lord Rutherford's atomic model

Quantum Mechanical Model

14.

The atomic no. of an element is the number of:

electron in neutral atom

protons in nucleus of an atom

up and down quarks in the proton of an atom

positive charge in the nucleus of an atom

15.

The biggest lie told to us about the filling of electrons in energy levels is

The electrons are filled by

2n^2

rule.

The valence shell can only accommodate 8 electrons.

Each shell is made up of orbitals like s, p, d & f.

The electrons are virtual particles.

16.

Types of covalent bonds...

Triple covalent bond

Multiple covalent bond

Double covalent bond

Single covalent bond

17.

Atoms that have 1,2 or 3 electrons can...

Eat 5-star and do nothing

lose electrons

gain electrons

share electrons

18.

A chlorine atom is...

negatively charged

I don't know

positively charged

electrically neutral

19.

Bonds between metals and non-metals are...

covalent

ionic

ionic or electrovalent

electrovalent

20.

The electronic configuration of neon is...

2,8,1

$1s^22p^7$

2,8,8,

2,8

21.

The reaction

Zn-2e^-=Zn^{2+}

is a/an...

Redox reaction

Neutralization reaction

Oxidation Reaction

Reduction Reaction

22.

Formation of Chlorine molecule...

$[Cl-C]=Cl_2$

$[C-C]=Cl_2$

$[Cl-Cl-Cl]=Cl_2$

$[Cl-Cl]=Cl_2$

23.

Water molecule...

$H-O-H=2HO$

$H-O-H=2H_2O$

$H-O-H=H_2O$

$O-H-O=H_2O$

24.

Metals always form

no ions

cations

anions

tachyons

100 %

Atomic Structure & Chemical Bonding

Total questions: 24

Worksheet time: 15mins

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