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Andreyy89
3 years ago
14

The material the start all reactions are ______ and the materials that are formed are called _____.

Chemistry
2 answers:
max2010maxim [7]3 years ago
7 0

Answer:

I think the second space is chemical bonds

Andreas93 [3]3 years ago
5 0
Reactant and then product
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The quantity, q grams, of the radioactive isotope strontium-90 present in a sample decreases by half over a period of about t =
velikii [3]
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How do you differentiate between gas and a vapour ?
kolbaska11 [484]
Gas is a substance that will not phase change.

And vapor is a substance above it's boiling point temperature.
6 0
3 years ago
How many grams of sugar must be dissolved in 150 ML of water to make a solution that has a concern traction of .6 g/ml
grandymaker [24]

Hey there!:

Density = 0.6 g/mL

Volume = 150 mL

Mass = ?

therefore:

D = m / V

0.6 = m / 150

m = 0.6 x 150

m = 90.0 g of sugar

Hope this helps!

5 0
3 years ago
match the number of negative charges to the number of positive charges to make each combination balanced (see image for answer)
BartSMP [9]

Answer : The correct match is:

1 positive charge = 1 negative charge

2 positive charges = 2 negative charges

3 positive charges = 3 negative charges

Explanation :

As we now that there are three subatomic particles which are protons, electrons and neutrons.

The protons and neutrons are located inside the nucleus and electrons are located around the nucleus.

The protons are positively charged, the electrons are negatively charged and neutrons are neutral.

As we know that all the things are made up of charges and opposite charges attract to each other.

In a neutral atom, the positive charges and negative charges are balanced in an object. That means, in neutral atom the number of positive charges are equal to the negative charges.

So we can say that:

1 positive charge = 1 negative charge

2 positive charges = 2 negative charges

3 positive charges = 3 negative charges

5 0
4 years ago
Which type of plate boundary is responsible for creating mountains?
sleet_krkn [62]

Answer:

O Continental-continental convergent boundary

Explanation:

Hope it helps.

6 0
3 years ago
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