CHEMISTRY MIDDLE SCHOOL

What mineral property is illustrated by this photograph?​
what mineral property is illustrated by this photograph?​ - 1

Answers

Answer 1
Answer:

Hardness, lustre, and colour.

Explanation:

These Rocks shown in photographs are made of different types of minerals which have properties as follows:

●The color of the rock is grey, brown and yellow after it is ground into a powder its color is streak.

● The lustre of the rock tells how shiny the rocks are.

● Other properties include hardness, texture, shape, and size.

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The kidney is a (n) _______. The excetory system is a (n)_______.

Answers

I'm not exactly sure if this is the answer you're looking for, but the kidney is an organ and the excretory system is an organ system. 

Which of these is indication that a chemical reaction has occurred?A. Freezing of a substance

B. Melting of a substance

C. Boiling of a substance

D. Formation of a Preciptate

Answers

B.melting of a substance
I think it's B, the melting of a substance.

What does the arrow mean in a chemical equation?

Answers

A reactionarrow simply indicates that something has changed and that one thing has become another.

What is a chemical reaction?

A chemicalreaction is a process that converts one or more substances, known as reactants, into one or more different substances, known as products.

Chemical elements or compounds are examples of substances. A chemical reaction rearranges the constituent atoms of the reactants to produce various products.

The most important characteristics of events occurring in the universe are chemical reactions.

Plants grow, fruit development, and biodegrade towards becoming rich in nitrogen for new plants through chemical reactions.

Humans along with all other animals reproduce, digest, grow, heal, and think as a result of chemical reactions.

The arrow connects the old and new things (the thing that formed). An equation of reaction employs the reactionarrow. The reactant is the thing that reacted.

Thus, this is the chief meaning of the arrow in a chemicalreaction, the it shown the reactants combined to form products.

For more details regarding chemical reactions, visit:

brainly.com/question/22817140

#SPJ6
I believe it means yield or equal

Hope this helps!

When an electric kettle containing cold water is switched on, the water in it starts boiling after a few minutes. What is the source of the heat energy of the boiling water? (3 points)a. Mechanical energy from the power socket

b. Newly created energy that increased the total energy

c. Mechanical energy from the heating element in the kettle

d. Already existing energy that was present in some other form

Answers

Answer:

Mechanical energy from the heating element in the kettle

Explanation:

This is because the Element creates Mechanical and heat energy
i say D already existing energy

Say no for polythene bags and say yes for paper bags. Comment on this slogan

Answers

Answer:

Yes

Explanation:

What is inetia and why is it importent

Answers

it's momentum and it's important to understand bc it explains why things do not stop moving after the energy that is being used to make that movement has stopped
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