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4 years ago

Several properties of water are shown. Classify each property as a PHYSICAL property or a CHEMICAL property.

Chemistry

2 answers:

BaLLatris [955]4 years ago

7 0

Explanation:

A property which brings no change in chemical composition of a substance is known as a physical property.

For example, size, mass, density etc are physical property.

Whereas a property which brings change in chemical composition of a substance is known as a chemical property.

For example, reactivity, toxicity are chemical properties.

Therefore, classify the given properties as follows.

Can be split into hydrogen and oxygen - chemical property.
Is liquid at room temperature - physical property.
Has density of 1.0 g/cm^3 - physical property.
Reacts with certain metals - chemical property.

Verizon [17]4 years ago

4 0

Splitting is chemical liquid at room temp is physical density is physical and reactions are chemical

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4. A gas occupies 1.56 L at 2.00 atm. What will be the volume of this gas if the pressure becomes 4.00 atm?

tekilochka [14]

Answer:

0.78 L

Explanation:

From Boyle's Law :

P₁V₁ = P₂V₂

Here :

P₁ = 2.00 atm
V₁ = 1.56 L
P₂ = 4.00 L

Solving :

V₂ = P₁V₁ / P₂
V₂ = 2 x 1.56 / 4
V₂ = 1.56 / 2
V₂ = 0.78 L

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2 years ago

What is a Newton unit?

Mila [183]

Answer:

Units of force.

Explanation:

Issac Newton created the laws of motion and discovered gravity.

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4 years ago

Name at least three types of energy associated with a microwave

IrinaVladis [17]

I'm pretty sure what you are trying to ask for is radiative energy, light energy, and electronic energy.
Radiative since the microwave is releasing radiation,
Light since there is light inside the microwave,
Electronic since it is plugged in and uses electricity.
You can also use sound, but I don't think every microwave makes sound.

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3 years ago

PLEASE PLEASE HELP ITS PAST DUE AND IM CLUELESS ILL GIVE BRAINLIEST TO THE FIRST CORRECT ANSWER

aev [14]

Answer:

$\boxed {\boxed {\sf A. \ Change \ in \ state \ of \ matter}}$

Explanation:

A physical change occurs when only the physical properties change. They are generally reversible and no new substances are formed.

However, in a chemical change, the chemical structures and properties change, plus new substances are formed.

Let's analyze each answer choice.

1. Change in state of matter

The state of matter is a physical property, so this is a physical change.

2. Precipitate was formed

A precipitate is a solid formed in a liquid solution. This is a new substance and a chemical change.

3. Unexpected change in odor.

A change in odor is a sign of chemical change.

4. Formation of bubbles

Bubbles signify the formation of gas or a new substance.

So, the best answer choice is A. change in state of matter

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3 years ago

Read 2 more answers

During which phase change does the arrangement of water molecules become more orderly

pychu [463]

The answer is C Boiling.

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3 years ago