PRAXIS 5005 SCIENCE EXAM QUESTIONS AND ANSWERS

PRAXIS 5005 SCIENCE LATEST
EXAM
1. What is the basic unit of matter?


A. Atom
B. Molecule
C. Cell
D. Compound


Correct Answer: A
Rationale: Atoms are the smallest units of matter that retain chemical
properties.


2. Which particle has a negative charge?


A. Proton
B. Neutron
C. Electron
D. Nucleus



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, PRAXIS 5005 SCIENCE LATEST
EXAM
Correct Answer: C
Rationale: Electrons carry a negative charge.


3. What is the center of an atom called?


A. Electron cloud
B. Nucleus
C. Proton
D. Shell


Correct Answer: B
Rationale: The nucleus contains protons and neutrons.


4. What type of bond involves sharing electrons?


A. Ionic
B. Covalent
C. Metallic

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, PRAXIS 5005 SCIENCE LATEST
EXAM
D. Hydrogen


Correct Answer: B
Rationale: Covalent bonds share electrons between atoms.


5. What is H₂O an example of?


A. Element
B. Compound
C. Mixture
D. Atom


Correct Answer: B
Rationale: Water is composed of hydrogen and oxygen atoms
chemically bonded.


6. Which state of matter has a definite volume but no definite shape?



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, PRAXIS 5005 SCIENCE LATEST
EXAM
A. Solid
B. Liquid
C. Gas
D. Plasma


Correct Answer: B
Rationale: Liquids take the shape of their container but have fixed
volume.


7. What is energy?


A. Matter
B. Ability to do work
C. Mass
D. Force


Correct Answer: B
Rationale: Energy enables work or movement.

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