Properties And Changes In Matter Worksheet - Free Printable

Let’s go step by step to sort each property into either Chemical or Physical.

First, remember:
- Physical properties are things you can observe or measure without changing what the substance is. Like how it looks, smells, feels, or its temperature points.
- Chemical properties tell us how a substance reacts or changes into something new — like if it rusts, burns, or reacts with water or acid.

Now let’s look at each one:

1. Color → You can see color without changing the substance. → Physical

2. Smell → You can smell something without changing it. → Physical

3. Reactivity with water → This means does it react (like fizz or burn) when mixed with water? That changes the substance. → Chemical

4. Boiling point → The temperature where it turns to gas — still the same substance, just changed state. → Physical

5. Acidity → How acidic something is tells us how it will react with other things (like bases). It’s about chemical behavior. → Chemical

6. Rusting → Rusting is iron turning into iron oxide — a whole new substance! → Chemical

7. Heat of contact → Hmm… this might be a typo. Probably meant “Heat of combustion” or “Heat capacity”? But as written, “heat of contact” isn’t standard. However, if we think about heat transfer on contact — that’s physical (like touching hot metal). But in science contexts, sometimes “heat of reaction” is chemical. Since this is Grade 1 level, and “heat of contact” likely refers to feeling heat from touch (physical sensation), we’ll put it under Physical. *(Note: If this was “heat of combustion”, it would be chemical — but based on wording, we go with physical.)*

8. Radioactivity → This is when atoms break down and change into different elements — definitely a chemical/nuclear change. → Chemical

Wait — let’s double-check “Heat of contact”. In real science, there’s no such term as “heat of contact”. It’s probably a mistake for “specific heat” or “thermal conductivity”, which are physical. Or maybe “heat released on contact” — which could be chemical. But since this is for Grade 1, and the list includes simple terms, it’s safest to assume it’s referring to something observable without changing the substance — so Physical.

Also, note: “Reactivity with water” is listed as two lines (“Reactivity” and “with water”) — but it’s one property. So we treat them together.

Let’s list them clearly:

✔ Physical Properties:
- Color
- Smell
- Boiling point
- Heat of contact (assumed physical)
→ Wait, that’s only 4. We have 8 items total. Let’s recount the original list:

Original bullet points:
1. Color
2. Smell
3. Reactivity
4. with water ← this is part of #3
5. Boiling point
6. Acidity
7. Rusting
8. Heat of contact
9. Radioactivity

Actually, looking again — “Reactivity with water” is one item split over two lines. So total distinct properties = 8.

List again:

1. Color → Physical
2. Smell → Physical
3. Reactivity with water → Chemical
4. Boiling point → Physical
5. Acidity → Chemical
6. Rusting → Chemical
7. Heat of contact → Physical (assuming it means thermal sensation or conductivity)
8. Radioactivity → Chemical

So:

Chemical:
- Reactivity with water
- Acidity
- Rusting
- Radioactivity

Physical:
- Color
- Smell
- Boiling point
- Heat of contact

That’s 4 in each box — perfect.

Final Answer:
Chemical: Reactivity with water, Acidity, Rusting, Radioactivity
Physical: Color, Smell, Boiling point, Heat of contact