1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lapatulllka [165]
3 years ago
8

What is a level 7-8 grade science fair project I can do?

Chemistry
1 answer:
Delicious77 [7]3 years ago
4 0
Making an atom or a virus structure
You might be interested in
A substance made of two or more elements chemically combined in a set ratio, or proportion, is called a ___.
snow_lady [41]
Hey there!

The correct answer to your question is a compound.

A substance of two or more elements chemically combined in a set ratio, or proportion, is called a compound.
This is because compounds are made of two or more elements. Table salt is an example of a compound because it is made up of the elements chlorine and sodium.

Hope this helps you.
Have a great day!
7 0
3 years ago
Filtration, decantation, and evaporation are examples of
Tju [1.3M]
<span>An element is made of only one kind of atom, while a compound contains the atoms of two or more elements. For example, gold is made of only one kind of atom, so it is an element, but water is a mix of hydrogen and oxygen, so it is a compound.</span>
4 0
3 years ago
A piece of metal has a volume of 30.0cm3 and a mass of 252g. What is its density? what metal do you think this is?
Alborosie

Answer:

Explanation:

  1. get density = D = m / V = 0.252 / 0.00003 = 8400
  2. metal will be Cu => bronze
3 0
3 years ago
For the reaction:
Sophie [7]

Hey there!

For SN1 mechanism; the activation barrier is the C-I bond energy which is broken in the first step of the reaction.

The activation barrier is : 56 kcal/ mol = 5.6 kcal/ mole ( nearest 0.1)

6 0
3 years ago
Using the phase diagram for CO,, what phase is carbon dioxide in at 12 atm
Ksju [112]

Answer:liquid

Explanation:

7 0
3 years ago
Other questions:
  • Need help with this question
    13·1 answer
  • Choose the aqueous solution with the highest vapor pressure. These are all solutions of nonvolatile solutes and you should assum
    12·1 answer
  • What does pH measure?
    13·2 answers
  • Can anyone can answer practice problem exercise 6.5
    6·2 answers
  • Which type of molecule forms structures in cells and stores energy? I NEED HELP
    5·1 answer
  • 2. Based on what you know about waves and light, do you think that light can be
    12·2 answers
  • Symbol for the magnesium oxide reactants<br>​
    11·2 answers
  • Complete the pie chart formula.<br><br> (Category/ ) × 360° = Portion of graph.
    8·1 answer
  • A solution contains an unknown amount of dissolved magnesium. Addition of
    14·1 answer
  • chegg The value for the equilibrium constant for the following chemical reaction, the auto-ionization of water, is 1.0x10-14 at
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!