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3 years ago

List 3 common house hold items and 2 physical properties for each

Chemistry

2 answers:

BARSIC [14]3 years ago

7 0

physical properties for a bar of soap: hardness and color

physical properties for a book: texture and size

physical properties for tooth past: cohesiveness and taste

HACTEHA [7]3 years ago

5 0

Answer: The correct answer is:

1. Metal pot: Hardness, fusibility

2. Glass cup: Transparent, resistant

3. Sheet of paper: White, porous

Explanation:

A physical property is one that is based primarily on the structure of the object, substance or matter, which is visible and measurable.

We can define the physical properties of an object through observation and measurement. For example, the physical properties of a wooden cube would be: dense, solid, square, wooden, organic, non-malleable, etc.

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Why are city streets so vital to the functioning of a city, as well as the people living within it?

harkovskaia [24]

Answer: Bc of the non trash

Explanation:

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3 years ago

What type of bonds form salt crystals

dolphi86 [110]

For the answer to the question above, I believe it is anA ionic bond because NaCl is a bond between a metal and a non-metal. Na has a +1 charge and Cl has a -1 charge, therefore there is an exchange of ions between both elements to achieve a stable configuration.

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4 years ago

Which of the following statements describe chemical properties?

Y_Kistochka [10]

Answer:

A. Oxygen gas supports combustion.

B. Hydrofluoric acid reacts with glass.

C. Fertilizers help to increase agricultural production.

Explanation:

Chemical properties can only be observed when a chemical change, i.e. a change in the chemical composition, occurs.

On the other hand, physical properties are observed or measured without altering the composition of the substances.

Typical examples of chemical properties are reactivity, flammability, combustion, oxidation states, acidity, among others that require to carry out a chemical reaction to be observed.

Typical examples of physical properties are freezing point, melting point, boiling point, density, solubility, corrosiveness, among others.

Thus, as for the choices you have:

A. Oxygen gas supports combustion: the only way to observe this property is by carrying out a combustion reaction, so this describes a chemical property.

B. Hydrofluoric acid reacts with glass: again, only by letting hydrofluoric acid react with glass this can be observed, so this is another example of a chemical property.

C. Fertilizers help to increase agricultural production: fertilizers are absorbed by the plants and converted by biochemical reactions, so this also describes a chemical property.

D. Water boils below 100°C on top of a mountain: boiling is a change of state, the water is H₂O and continues having the same composition after boiling, so this describes a physical property.

E. Lead is denser than aluminum: density is measured by physical media, measuring mass and volume; so this is a physical property.

4 0

3 years ago

The scientific Method

allochka39001 [22]

Observation : a piece of info we all gather through our 5 senses
Hypotheses: a testable explanation for an observation
Data: info that scientists gather during an experiment
Experiment: a procedure that is designed to test a hypothesis
Conclusion a judgment or decision
Scientific method a series of steps

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3 years ago

Mass of flask and stopper: 32.276g

Alex73 [517]

A) Flask+stopper=32.276g
Flask+stopper+liquid=57.235g
57.235-32.276=24.959
Hope this helps im working on the others will out answer in comments

7 0

4 years ago