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WorksheetsNMB Q2 Quizziz Review Physical Science
Total questions: 25
Worksheet time: 13mins
Which subatomic particles are found in the nucleus of an atom?
Electrons only
Protons and electrons
Protons and neutrons
Neutrons and electrons
What is the charge of an electron?
Positive
Neutral
Negative
Variable
An atom has 12 protons and 14 neutrons. What is its mass number?
12
14
26
28
What is the mass number of an atom?
Number of protons only
Number of neutrons only
Number of protons plus neutrons
Number of electrons plus neutrons
Which subatomic particle is neutral?
Electron
Proton
Neutron
Ion
If an atom loses electrons, what does it become?
Negative ion
Positive ion
Neutral atom
Radioactive atom
Which element has 8 protons?
Nitrogen
Oxygen
Sulfur
Phosphorus
How many electrons does a neutral atom of phosphorus have?
12
14
15
26
What is the effect of adding a proton to an atom?
Changes the element
Changes the mass number only
Changes the charge only
No effect
Which atom represents a negative ion?
Na with 11 protons, 11 electrons
Mg with 12 protons, 12 electrons
Cl with 17 protons, 18 electrons
H with 1 proton, 1 electron
What determines the charge of an ion?
Number of neutrons
Number of protons
Difference between protons and electrons
Atomic mass
Elements in the same group have the same number of (a) .
Which group of elements does NOT usually form ions?
Alkali metals
Halogens
Noble gases
Alkaline earth metals
Which type of bond involves sharing electrons?
Ionic
Metallic
Covalent
Hydrogen
Which element is most likely to form a positive ion?
Chlorine
Sodium
Neon
Oxygen
Which type of bond is found in table salt (NaCl)?
Covalent
Metallic
Ionic
Hydrogen
Which group contains elements that are all metals?
Alkali metals
Halogens
Noble gases
Metalloids
What type of reaction is AB → A + B?
Synthesis
Decomposition
Single replacement
Double replacement
An exothermic reaction ______ energy.
Absorbs
Releases
Destroys
Stores
Which of the following is a decomposition reaction?
AB → A + B
A + B → AB
AB + CD → AD + CB
C4H10 + O2 → CO2 + H2O
Which of the following is a product of a synthesis reaction?
Two elements
One compound
Two compounds
One element
Which of the following reactions involves the release of energy?
Endothermic
Exothermic
Synthesis
Decomposition
Which of the following is a product of a decomposition reaction?
One compound
Two elements
Two compounds
One element
Which type of radiation has the greatest penetrating power?
Alpha
Beta
Gamma
Proton
If [H+] = 10⁻⁸, what is the pH?
6
7
8
-8
