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Worksheets2.1 Quiz- Structure of Matter
Total questions: 18
Worksheet time: 10mins
Name
Class
Date
1.
What is an atom?
a)
Atoms are protons.
b)
Atoms are not the basic unit of matter.
c)
Atoms are the basic unit of matter.
2.
What are the three subatomic particles of an atom? (more than one answer).
a)
proton
b)
atom
c)
neutrons
d)
electron
3.
What are protons?
a)
negatively charged particles located in the nucleus.
b)
positively charged particle located in the nucleus.
c)
positively charged particles located outside the nucleus.
4.
What are electrons?
a)
negatively charged particles located outside the nucleus.
b)
negatively charged particle located in the nucleus.
c)
positively charged particles located outside the nucleus.
5.
An element is a pure substance composed of only (a) of atom.
6.
Atoms of the same element that differ in the number of neutrons they contain are called _________________.
a)
Atoms
b)
isotopes
c)
neutrons
7.
The atomic number is the same number as
a)
protons and neutrons
b)
neutrons and electrons
c)
protons and electrons
8.
How many electrons in boron, which mass is 11?
a)
5
b)
6
c)
11
9.
How many neutrons in potassium (K)?
a)
19
b)
20
c)
58
10.
A chemical compound is a substance formed by the chemical combination of (a) elements in definite proportions.
11.
The physical and chemical properties of a __________ are usually very different from those of the elements from which it is formed.
a)
compound
b)
molecule
c)
element
12.
How many hydrogen atoms are present in the compound NH3, ammonia?
a)
1
b)
2
c)
3
13.
Identify the types of chemical bonds:
a)
ionic bonds
b)
attraction bonds
c)
covalent bonds
d)
van der Waals forces
14.
In ionic bonds, electrons are _________.
a)
shared
b)
transferred
15.
In covalent bonds, electrons are ______________.
a)
shared
b)
transferred
16.
In van der Waals forces there is _____________.
a)
ionic bonds
b)
covalent bonds
c)
an attraction between opposite sides
17.
Selenium (Se) is an __________.
a)
anion
b)
cation
18.
Rubidium (Rb) is a __________________.
a)
anion
b)
cation
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