A vocabulary-focused exploration of physical and chemical properties of matter, mixtures, solutions, and states of matter through matching, fill-in-the-blank, and real-world application exercises.
Directions: Read each real-world scientific scenario below. Fill in the blank with the correct vocabulary term from Word Bank A. Each word is used exactly once.
Word Bank A (Solved)
Matter
Mass
Volume
Solids
Liquids
Gas
Physical Property
Chemical Property
Reflectivity
1 Even though it is completely invisible, the air inside our classroom balloon has weight and occupies real physical space, proving it is a form of Matter.
2 When we set a block of pure aluminum on a triple-beam balance, we are measuring its physical Mass in grams.
3 To find the exact amount of physical space that a fluid takes up, we poured it into a graduated cylinder to measure its Volume in milliliters.
4 Ice cubes, iron nails, and wooden blocks are all classified as Solids because they hold a constant shape and a definite volume.
5 Water, honey, and olive oil are classified as Liquids since they flow freely and change shape to fit their container.
6 Steam rising from a beaker of boiling water expands to fill any container it occupies because it is a Gas.
7 Noting that a mystery substance has a bright yellow color, a metallic shine, and a density of 2.3 g/cm³ is describing a Physical Property.
8 Whether a substance reacts violently with water or is highly flammable are traits that define a Chemical Property.
9 The metal foil on a spacecraft is highly polished so that its high Reflectivity bounces harmful solar radiation away.
Directions: Read each real-world scientific scenario below. Fill in the blank with the correct vocabulary term from Word Bank B. Each word is used exactly once.
Word Bank B (Solved)
Conductivity
Magnetism
Mixture
Colloid
Solution
Solubility
Physical Change
Chemical Change
Conservation of Mass
10 Copper wires are heavily wrapped in rubber because copper has high electrical Conductivity, allowing electrical energy to flow.
11 Iron shavings are easily extracted from a sand mixture because iron exhibits physical Magnetism and clings tightly to magnets.
12 A clear bowl of rocks, pebbles, and sand is a Mixture because the individual parts do not blend chemically.
13 Milk is categorized as a Colloid because microscopic globules of butterfat are suspended throughout.
14 When white table salt is completely dissolved in water, the resulting mixture looks uniform and is called a Solution.
15 Stirring table sugar into warm tea increases its rate of dissolution, proving water can alter its Solubility limit.
16 Crumpling a piece of notebook paper is a Physical Change since its shape alters but its chemical makeup remains identical.
17 A steel bicycle rusting in the rain is undergoing a Chemical Change because iron converts to a completely new substance.
18 Measuring 10g of reactants and ending with exactly 10g of products in a closed flask proves the Conservation of Mass.
Gold has a bright metallic shine and melts at 1,064°C.
Gasoline ignites easily when exposed to an open flame.
Iron chains react with damp oxygen to generate red rust.
Water boils into steam at 100°C at normal atmospheric pressure.
B
Property Investigation: Lab Clues
Directions: Identify which specific vocabulary property is being tested in each lab station (Reflectivity, Conductivity, or Magnetism).
Lab Station 1: The Electric Circuit Test
A student connects an unknown sample into a circuit containing a battery and a light bulb. The bulb shines brilliantly, proving electricity flows through the material with minimal resistance.
Vocabulary Term:
Lab Station 2: The Mirror & Laser Test
Scientists test a new satellite foil by aiming an intense beam of light at its surface and measuring the percentage of radiant light that bounces directly off without being absorbed.
Vocabulary Term:
Lab Station 3: The Sorter Wand Test
In a recycling facility, crushed metal cans and plastic bottles pass under a rotating drum that pulls iron cans upward without physical contact, separating them instantly from non-ferrous debris.
Vocabulary Term:
C
Retake Concept Challenge
Why is conductivity classified as a physical property, while flammability is classified as a chemical property? Explain what happens to the matter during each test:
Review the critical differences between general mixtures, solutions, and colloids that frequently appear on the test.
Mixture
Two or more substances physically combined where each keeps its original properties.
Look: Visibly uneven; parts easily separated.
e.g. Trail mix, sand & water
Solution
Substances blended completely into a single uniform phase throughout.
Look: Completely uniform; dissolved solute never settles.
e.g. Salt dissolved in water
Colloid
Microscopic particles permanently suspended without settling out.
Look: Cloudy or opaque; scatters a light beam.
e.g. Whole milk, fog, paint
B
Precision Identification: Words in Context
Word Bank: Mixture • Solution • Colloid • Solubility (Use each word once)
The maximum limit of solute that can dissolve into a specific volume of liquid is its .
A bowl of rocks, water, and marbles is an obvious physical .
Because butterfat globules stay permanently scattered through milk without settling, milk is a .
Clear apple juice where sugar and flavor compounds are evenly dissolved is a .
C
Test Trap Buster: The Beam Test & Dissolving
Trap 1
You shine a flashlight through two beakers. Beaker A lets the beam pass without scattering. Beaker B shows a glowing, visible path of light. Which is a solution and which is a colloid? Explain:
Trap 2
A student stirs sugar into cold tea until extra grains remain on the bottom. What scientific term describes this limit, and what temperature change would allow more sugar to dissolve?
Retake Mastery Protocol • Phase 4
MATTER MYSTERIES
Vocabulary Retake Review: Changes & Conservation of Mass
A
Physical Change vs. Chemical Change Showdown
Directions: Classify each real-world process as Physical Change or Chemical Change and explain why.
1. Crushing an aluminum can
Evidence: Does the aluminum change into a new chemical substance?
2. Toasting a slice of bread dark
Evidence: What shows heat produced new chemical compounds?
3. Boiling water into steam
Evidence: Is steam still made of H₂O molecules?
4. Fireworks bursting with light
Evidence: Are light, sound, gas, and new products generated?
B
The Law of Conservation of Mass: Lab Proofs
Scientific Principle:
During any physical or chemical change, matter is neither created nor destroyed. The total mass of all starting materials (reactants) strictly equals the total mass of all resulting products.
Calculation 1: You dissolve 15 g of salt into 185 g of pure water inside a closed flask. What is the total mass of the solution?
Total Solution Mass:
(Show why: 15g + 185g = ?)
Test Trap 2: A 500g log burns in an open fire pit, leaving only 35g of ash. A student claims 465g of matter was destroyed. Why is this incorrect, and how does this uphold the Conservation of Mass?
C
Pre-Retake Self-Confidence Check
Are you ready to crush your retake?
I can define all 18 terms, differentiate physical vs chemical, and solve conservation problems.
Ready!
Need Review
C
Iron chains react with oxygen to rust. (Chemical)
P
Water boils into steam at 100°C. (Physical)
B
Property Investigation: Lab Clues (Solutions)
Lab Station 1: The Electric Circuit Test
Electricity flows easily to illuminate the light bulb.
Answer: Conductivity
Lab Station 2: The Mirror & Laser Test
Measures percentage of light bouncing off the polished surface.
Answer: Reflectivity
Lab Station 3: The Sorter Wand Test
Pulls iron cans upward using invisible magnetic attraction.
Answer: Magnetism
C
Retake Concept Challenge Key
Sample Complete Answer:Conductivity is a physical property because electrons flow through the material without altering its chemical identity (copper wire remains pure copper after carrying current). Flammability is a chemical property because observing it requires burning the material, which destroys the original chemical bonds and produces completely new substances (such as carbon dioxide, water vapor, and ash).
Microscopic particles suspended permanently; do not settle.
Key Test: Scatters light beam (Tyndall Effect).
B
Precision Identification (Solutions)
Maximum limit of solute that can dissolve is its Solubility.
A bowl of rocks, water, and marbles is an obvious physical Mixture.
Because butterfat globules stay permanently scattered through milk, milk is a Colloid.
Clear apple juice where sugar and flavors are evenly dissolved is a Solution.
C
Test Trap Buster Keys
Trap 1 Key
The Flashlight Beam Test:
Answer:Beaker A is a Solution because solute particles are dissolved at the molecular level, allowing light to pass directly through without scattering. Beaker B is a Colloid because the larger suspended microscopic particles scatter the light beam (Tyndall effect), making the path of light glow visibly.
Trap 2 Key
Sugar saturation in tea:
Answer: This dissolved limit is the sugar's solubility (the tea has reached saturation). To increase this limit and allow more sugar to dissolve, the student should heat or warm up the tea, because increasing temperature generally increases the solubility of solid solutes in liquids.
Test Trap 2 Solution: Burning log leaving 35g of ash:
Answer: The student is incorrect. Matter was NOT destroyed. The fire was an open system, so the missing 465 grams of matter escaped into the surrounding air as smoke, carbon dioxide gas (\(CO_2\)), and water vapor (\(H_2O\)). If the log and the oxygen it burned with had been trapped in a sealed airtight chamber, the total mass before and after burning would be strictly identical according to the Law of Conservation of Mass.
C
Teacher Retake Debrief Protocol
Top 3 Retake High-Yield Interventions:
Gas is Matter: Re-emphasize that invisible gases have real mass and volume.
Dissolving is Physical: Ensure students know dissolving salt/sugar does not create a new chemical.
Conservation in Open Systems: Remind students that smoke and steam carry mass away into the atmosphere.
