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Worksheets2021 Chemistry Test Part 1
Total questions: 35
Worksheet time: 20mins
How many protons and electrons does this element have?
35
18
17
52
How many neutrons does Chlorine have?
18
17
35
52
What is the atomic number?
35
18
17
52
B and C are found in the ______ of an atom.
electron cloud
Space
Nucleus
Outside
Which letter represents a proton?
a
b
c
Which letter represents a neutron?
a
b
c
Which letter represents an electron?
a
b
c
True or False: A nucleus has an overall positive charge.
True
False
How is the periodic table organized?
date of discovery
increasing atomic number
decreasing atomic number
increasing atomic mass
The tiny but very dense, positively charged center of the atom that holds most of the atomic mass
Electron Shells
Orbitals
Electron Cloud
Nucleus
What is the atomic mass?
35
18
17
52
What is the mass number of an element that has 29 protons, 35 neutrons, and 29 electrons?
29
6
64
58
The chemical formula for salt is NaCl. This formula tells us that sodium bonds with...
Carbon
Chlorine
Calcium
Cobalt
Families on the periodic table are __________.
Horizontal Rows
Vertical Columns
The atoms on the left of the staircase are called
metalloids
non-metals
metals
noble gases
How many atoms are there TOTAL in H2SO4 ?
6
5
7
3
How many atoms are present if there is no subscript following the element symbol?
0
2
only 1
1 million
The periodic table has __families.
8
7
18
2
Earth's atmosphere (air) is a _________.
element
mixture
compound
energy
Which example is a compound?
N2
O2
Cu
H2O2
How many Hydrogen atoms are in 4H2O?
6
8
2
4
Two or more substances physically combined (in the same place) but NOT chemically combined is called —
a compound
a pure substance
an element
a mixture
The smallest unit of matter
atom
cell
germ
compound
Two or more different elements that ARE chemically combined (bonded) is called an
element
compound
heterogeneous mixture
homogeneous mixture
Carbon dioxide (CO2) is one of the many gases found in our air. What elements make up this compound?
Carbon and Oxygen
Chlorine and Oxygen
Cobalt and Oxygen
Copper and Oxygen
