Question

Can someone please help me with this worksheet!? It will be highly appreciated!!​

Answer 1

The Fill in the Blanks responses are::

Physical properties can be observed without chemically changing matter.

Chemical properties describe how a substance interacts with other substances.

Solids have indefinite shapes and definite volumes.

Liquids have indefinite shapes and definite volume.

Gases have indefinite shapes and indefinite volumes.

Phase changes are physical changes. The freezing point is the temperature at which a liquid turns to a solid. It is also equal to the melting point, which is the temperature at which a solid turns to a liquid. The boiling point is the temperature at which a liquid turns to a gas, and the condensation point is the temperature at which a gas turns to a liquid.

Occasionally, a solid turns directly into a gas without turning into a liquid first. This is called sublimation.

II. The Label of the properties as chemical (C) or physical (P) are:

1. Combustibility - C
2. Malleability - P
3. Weight - P
4. Density - P
5. Tendency to corrode - C
6. Volume - P
7. Failure to react - P
8. Ductility - P
9. Texture - P
10. Melting point - P
11. Odor - P
12. Flammability - C

III. The Label the changes as chemical (C) or physical (P) are:

• Digestion of food - C
• Explosions - C
• Getting a haircut - P
• Lighting a candle - C
• Evaporation - P
• Ice cube melting - P
• Crushing rocks - P
• Tarnishing silver - C
• Formation of acid rain - C
• Dissolving salt in water - P

Note that:

Digestion of food is known to be a chemical change as the breakdown of food into smaller molecules.

Explosions are known to be a chemical change as the rapid chemical reactions that release a lot of energy.

Getting a haircutis known to be a chemical change as a physical change that alters the shape of hair.

See text below

I.

Fill in the Blanks

-------- properties can be observed without chemically changing matter.

------- properties describe how a substance interacts with other substances. --------have indefinite shapes and definite volumes. ------ have indefinite shapes and definite volume. -------have indefinite shapes and and indefinite volumes.

Phase changes are ---------changes. --------point is the temperature at which a liquid turns to a solid. It is also equal to the ---------- point which is the temperature at which a----------, turns to a ----------, ----------- point is the temperature at which a liquid turns to a gas, and -----------point is the temperature at which a gas turns to a liquid.

Occasionally, a solid turns directly into a gas without turning into a liquid first. This is called --------------

II. Label these properties as chemical (C) or physical (P). Be certain to know the definition of each of these properties.

combustibility

malleability

weight

density

tendency to corrode

volume

failure to react

ductility

texture

melting point

odor

flammability

III. Label these changes as chemical (C) or physical (P).

digestion of food

explosions

getting a haircut

lighting a candle

evaporation

ice cube melting

crushing rocks

tarnishing silver

formation of acid rain

dissolving salt in water