Font size
WorksheetsChemistry Quiz
Total questions: 25
Worksheet time: 15mins
Which property of the unknown element determines the other elements it reacts with?
number of neutrons
The period in the periodic table
number of protons
number of valence electrons
An atom has 5 protons, 5 neutrons, and 5 electrons. What is the charge of the atom’s nucleus?
+5
+6
+11
-11
An atom has 15 protons, 16 neutrons, and 15 electrons. What is the charge of the atom’s nucleus?
+16
+31
+15
-15
Which characteristic is most closely related to an atom's chemical reactivity?
Number of protons
the atom's density
The number of valence electrons
the atomic mass
What types of particles are found in the cloud surrounding the atom’s nucleus?
positively charged particles only
negatively charged particles only
neutral particles and positively charged particles
negatively charged particles and positively charged particles
What types of particles are found in the atom’s nucleus?
positively charged particles only
negatively charged particles only
neutral particles and positively charged particles
negatively charged particles and positively charged particles
How many protons, neutrons, and electrons are present in an atom of rhodium, Rh, with a mass number of 103?
45 protons, 103 neutrons, 45 electrons
45 protons, 58 neutrons, 45 electrons
103 protons, 58 neutrons, 103 electrons
45 protons, 45 neutrons, 45 electrons
How many protons, neutrons, and electrons are present in an atom of gold, Au, with a mass number of 197?
197 protons, 79 neutrons, 197 electrons
79 protons, 79 neutrons, 79 electrons
79 protons, 197 neutrons, 79 electrons
79 protons, 118 neutrons, 79 electrons
Which statement accurately describes the atoms of a specific element?
An titanium, Ti‚ atom contains 48 protons inside the nucleus and 22 neutrons outside the nucleus
A chlorine‚ Cl atom contains 17 electrons outside the nucleus and 17 neutrons inside the nucleus.
An aluminum‚ Al‚ atom contains 27 electrons and 27 protons inside the nucleus.
A argon, Ar‚ atom contains 18 protons inside the nucleus and 18 electrons outside the nucleus.
Which element will be the most reactive?
Gallium, Ga, because it is in group 3 and has 3 valence electrons.
Boron, B, because it has 9 protons and 9 electrons.
Fluorine, F, because it is in group 17 and has 7 valence electrons.
Silicon, Si, because it has the most electrons.
What is the atomic mass of this element?
3
4
7
10
What element is this?
Boron
Carbon
Sodium
Sulfur
What group does this element belong to?
Group 1
Group 3
Group 6
Group 9
What is this element?
Beryllium (atomic #4)
Boron (atomic #5)
Carbon (atomic #6)
Nitrogen (atomic #7)
The atoms of a certain element each contain 19 protons and 1 valence electron. Which statement correctly identifies this element and describes its chemical reactivity?
The element is fluorine, and it is highly reactive.
The element is potassium, and it is highly reactive.
The element is fluorine, and it is not very reactive.
The element is potassium, and it is not very reactive.
Which 2 groups are the most reactive on the periodic table? (Check both)
1
2
17
18
I have 5 protons, 6 neutrons and 3 valence electrons electrons- who am I?
lithium
boron
carbon
sodium
Which of these elements is the least reactive?
Ne
Cl
Ga
Sn
A researcher wants to experiment with an element that reacts like neon (Ne) but has a greater atomic mass. Which element should the researcher select for the experiment?
Lithium
Helium
Argon
Boron
Same period or same group?
Group
Period
What statement is correct?
Group 1, Period 4
Group 4, Period 2
Group 2, Period 4
Group 20, Period 2
How many valence electrons are in an atom of each element in Group 15 in the periodic table?
15
5
8
2
What is the difference between the number of electrons in an atom of iron, Fe, and the number of electrons in an atom of oxygen, O?
26
18
8
56
What is the total number of protons, neutrons, and electrons in a calcium, Ca, atom that has a mass number of 40?
20
40
60
80
