SCIENCE 14 FINAL EXAM REVIEW: COMPLETE STUDY GUIDE + PRACTICE QUESTIONS & VERIFIED ANSWERS (A+ GUARANTEED) PRACTICE QUESTIONS WITH ANSWERS & RATIONALES

,SCIENCE 14 FINAL EXAM REVIEW: COMPLETE STUDY GUIDE + PRACTICE
QUESTIONS & VERIFIED ANSWERS (A+ GUARANTEED)

🔬 PRACTICE QUESTIONS WITH ANSWERS & RATIONALES




QUESTIONS 1–20: MATTER & ATOMS



1. What is matter?

A. Energy only
B. Anything that has mass and occupies space
C. Only solids
D. Only liquids

, Correct Answer: B. Anything that has mass and occupies space
Rationale: Matter includes solids, liquids, and gases.



2. The smallest unit of an element is:

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

Correct Answer: C. Atom
Rationale: Atoms retain the properties of elements.



3. Which particle has a positive charge?

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

Correct Answer: C. Proton
Rationale: Protons carry positive charge.



4. Which particle has no charge?

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

Correct Answer: C. Neutron
Rationale: Neutrons are neutral.



5. Where are electrons found?

A. Nucleus
B. Orbitals/cloud

, C. Protons
D. Core

Correct Answer: B. Orbitals/cloud
Rationale: Electrons move around the nucleus.



6. A substance made of two or more elements chemically combined is:

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

Correct Answer: C. Compound
Rationale: Compounds have fixed ratios.



7. Which is a pure substance?

A. Air
B. Salt
C. Soil
D. Milk

Correct Answer: B. Salt
Rationale: Salt (NaCl) is a compound.



8. What is a mixture?

A. Chemically combined substances
B. Physically combined substances
C. Single element
D. Pure compound

Correct Answer: B. Physically combined substances
Rationale: Mixtures can be separated physically.



9. Which is a heterogeneous mixture?