wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Chem Quiz 02

Total questions: 45

Worksheet time: 1hrs 16mins

Name
Class
Date
1.
A _________________ is composed of symbols and subscripts indicating the number of atoms of an element in a compound.
a)
Chemical Equation
b)
Chemical Reaction
c)
Synthesis Reaction
d)
Chemical Notation
2.
Atoms gain lose, gain, or ______electrons to get a stable outer energy level.
a)
share
b)
split
c)
create
d)
destroy
3.
A _______ is a charged particle because it has more or fewer electrons than protons.  When an atom _____ an electron, it becomes a positively charged ion.  When an atom ____an electron, it becomes a negatively charged ion.
a)
isotope, gains, loses
b)
isotope, loses, gains
c)
ion, loses, gains
d)
ion, gains, loses
4.
__________are neutral particles formed as  result of sharing electrons.
a)
Protons
b)
Electrons
c)
Molecules
d)
Ions
5.
Atoms can form double or triple ______depending on whether they share two or three pairs of electrons.
a)
Molecules
b)
Bonds
c)
Compounds
d)
Elements
6.
Ionic bonds are between...
a)
nonmetals and nonmetals
b)
carbon and oxygen
c)
metals and nonmentals
d)
hydrogen and chlorine
7.
Covalent bonds are between...
a)
two or more nonmetals
b)
sodium and chlorine
c)
metals and metals
d)
metals and nonmetals
8.
What kind of bond forms between two nonmetals?
a)
ionic 
b)
covalent
c)
metallic
d)
fake
9.
What are valence electrons?
a)
sum of the protons and neutrons
b)
protons minus electrons
c)
electrons in the inner shells
d)
electrons in the outer shell
10.
If an atom loses two electrons what charge will it have?
a)
-2
b)
-1
c)
+1
d)
+2
11.
If an atom gains two electrons what charge will it have?
a)
-2
b)
-1
c)
+1
d)
+2
12.
If an atom has 7 protons and 7 electrons what charge will it have?
a)
-2
b)
-1
c)
0
d)
+2
13.
Predict the bond that will form between Be and F.
a)
Ionic
b)
Covalent
14.
Predict the bond that will form between Se and Cl.
a)
Ionic
b)
Covalent
15.

What type of diagram is this?

a)

Lewis Dot Structure

b)

Bohr Model

c)

Alkali Diagram

d)

Chemical Diagram

16.
How many valence electrons in this structure?
a)
6
b)
5
c)
4
d)
7
17.

The vertical (up and down) columns in the Periodic Table are called

a)

groups

b)

towers

c)

periods

d)

atomic numbers

18.
The Modern Periodic Table of Elements is arranged by
a)
atomic mass
b)
atomic number
c)
valence electrons
d)
number of isotopes
19.

the basic structural unit of matter

a)

atom

b)

matter

c)

element

d)

nucleus

20.

a collection of atoms of one type that cannot be broken down into simpler substances by ordinary chemical or physical means

a)

element

b)

subatomic particle

c)

electron

d)

matter

21.

the positively charged subatomic particle contained in the nucleus of an atom

a)

proton

b)

neutron

c)

electron

d)

matter

22.

a subatomic particle, contained in the nucleus of an atom, having the same mass as a proton but no electrical charge

a)

proton

b)

neutron

c)

electron

d)

matter

23.

one of several forms of a single element, which contains the same number of protons, but different numbers of neutrons

a)

isotope

b)

ion

c)

orbital

d)

nucleus

24.
Referring to the table, what is the relative mass of a proton?
a)
10
b)
1
c)
0.1
d)
0.01
25.
For an atom to be electrically neutral, it must contain the same number of _____
a)
protons and neutrons
b)
neutrons and electrons
c)
protons and electrons
d)
nucleons and electrons
26.
The sum of the number of protons and the number of neutrons is called the _____
a)
atomic number
b)
mass number
c)
isotope number
d)
average weight
27.

Subatomic particles with a negative charge

a)

Electrons

b)

Neutrons

c)

Protons

d)

Quarks

28.

How many molecules are in 2.5 mol of NaCl?

a)

1.5 x 1024 molecules

b)

1.5 molecules

c)

4.15 molecules

d)

1.5 x 1023 molecules

29.

A formula with the lowest whole number ratio of elements in a compound is called

(a)  

30.

When somebody cook at the kitchen, we can smell it very well. Explain the observation base on the kinetic theory of matter [3 Marks]

4 lines
31.

Which subatomic particles have same mass?

(a)  

32.

What is an isotope?

4 lines
33.

What is the physical properties of ionic compound? [4 marks]

4 lines
34.

NaCl has higher melting point than napthalene. Explain why [2 marks]

4 lines
35.

Write the name of metal oxide that can be reduced by hydrogen gas?

4 lines
36.

How to determine the reaction between metal oxide and hydrogen gas has completed? [1 Mark]

4 lines
37.

How to make sure metal is not oxidise back into metal oxide at the end of the experiment? [1 Mark]

4 lines
38.

State the type of particles that has low melting and boiling point

(a)  

39.

Why hidrochloric acid can conduct electricity while hidrogen chloride gas cannot? [1 Mark]

4 lines
40.

An element R has proton number of 13. State the position of R in periodic table. Explain why? [3 Marks]

4 lines
41.

___ R + H2O → _______ + _______

R is a group 1 element. Name the product formed [2 Marks]

4 lines
42.

Name element that form amphoteric oxide

(a)  

43.

State 3 special characteristics of transition element? [3 Marks]

4 lines
44.

Which one is more reactive between potassium and sodium? Explain why [4 Marks]

4 lines
45.

Why Chlorine is more reactive than Bromine? Explain [3 Marks]

4 lines

Similar Resources on Wayground

enlaces quimicos _ Configuracion electronica

40 questions

enlaces quimicos _ Configuracion electronica

quiz

Worksheet

•

1st Grade

Acids, Bases & Salts

50 questions

Acids, Bases & Salts

quiz

Worksheet

•

KG - 12th Grade

Biochemistry

45 questions

Biochemistry

quiz

Worksheet

•

KG - University

CLMS Electricity and Magnetism

49 questions

CLMS Electricity and Magnetism

quiz

Worksheet

•

KG - University

Unit 3 Review: Periodic Table

47 questions

Unit 3 Review: Periodic Table

quiz

Worksheet

•

1st - 12th Grade

hoa 10 đề kiểm tra học kỳ 1

50 questions

hoa 10 đề kiểm tra học kỳ 1

quiz

Worksheet

•

1st - 9th Grade

Precision and Accuracy with Significant Figures Test Review

46 questions

Precision and Accuracy with Significant Figures Test Review

quiz

Worksheet

•

KG - University

8th Grade Science Final Review

40 questions

8th Grade Science Final Review

quiz

Worksheet

•

KG - University