2026/2027 Chamberlain
1.** Which of the following is a physical property of matter?
A) Flammability
B) Reactivity with acid
C) Boiling point
D) Ability to rust
**Correct Answer:** C) Boiling point
**Rationale:** Boiling point is a physical property because it can be observed
without changing the substance's chemical identity. Flammability (A),
reactivity with acid (B), and ability to rust (D) are chemical properties that
describe a substance's ability to undergo chemical change.
**2.** Which of the following is an example of a chemical change?
A) Melting ice
B) Boiling water
C) Rusting iron
D) Dissolving sugar in water
**Correct Answer:** C) Rusting iron
**Rationale:** Rusting iron is a chemical change because it results in the
formation of a new substance (iron oxide). Melting ice (A), boiling water (B),
and dissolving sugar in water (D) are physical changes that do not alter the
chemical composition.
,**3.** Which state of matter has a definite shape and definite volume?
A) Gas
B) Liquid
C) Solid
D) Plasma
**Correct Answer:** C) Solid
**Rationale:** Solids have a definite shape and volume because their
particles are closely packed and vibrate in place. Liquids (B) have a definite
volume but take the shape of their container. Gases (A) have no definite
shape or volume.
**4.** Which state of matter has particles that are far apart and move freely?
A) Solid
B) Liquid
C) Gas
D) Supercritical fluid
**Correct Answer:** C) Gas
**Rationale:** Gases have particles that are far apart and move freely,
allowing them to fill any container and have no definite shape or volume.
Solids (A) have closely packed particles; liquids (B) have particles that are
close but can move past each other.
, **5.** A pure substance that cannot be broken down into simpler substances
by chemical means is called a(n):
A) Compound
B) Element
C) Mixture
D) Solution
**Correct Answer:** B) Element
**Rationale:** An element is a pure substance that cannot be broken down
into simpler substances by chemical means. A compound (A) is formed when
two or more elements are chemically bonded together. A mixture (C) is a
combination of substances that retain their individual properties.
**6.** A combination of two or more substances that retain their individual
properties is called a:
A) Compound
B) Element
C) Mixture
D) Pure substance
**Correct Answer:** C) Mixture
**Rationale:** A mixture is a combination of two or more substances that
retain their individual properties. A compound (A) has a fixed composition
with properties different from its constituent elements.