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
Vilka [71]
3 years ago
6

A teacher wants to perform a classroom demonstration that illustrates both chemical and physical changes. Which would be the bes

t demonstration that she could use?
Chemistry
1 answer:
Jlenok [28]3 years ago
5 0

when you crumble paper is still paper when you burn down paper you get ashes. that is want is call chemical and physical changes.

You might be interested in
PLEASE HELP!!!! 24 POINTS
Leno4ka [110]
A petroleum-based lubricant used to in farming machinery.
hope i helped very well
4 0
3 years ago
Read 2 more answers
which term is used when sugar is completely dissolved in water                                                                 
GaryK [48]
The term which is used is homogeneous.
when sugar is completely dissolved in the water, the mixture or solution homogeneous, both in same phase and same uniform texture that is liquid.
There two types of mixtures are heterogeneous and homogeneous in different phases.
If sugar is not completely dissolved in water and you see the crystals of sugar in water, then the solution will be heterogeneous.
3 0
4 years ago
Lead has a density of 11.3 g/mL. If you have 105 grams of lead,
Elza [17]

Answer:

<h2>Volume = 9.29 mL</h2>

Explanation:

Density of a substance can be found by using the formula

Density( \rho) =  \frac{mass}{volume}

From the question

Density = 11.3 g/mL

mass = 105 g

Substitute the values into the above formula and solve for the volume

That's

11.3 =  \frac{105}{v}

Cross multiply

11.3v = 105

Divide both sides by 11.3

v =  \frac{105}{11.3}

v = 9.29203

We have the final answer as

<h3>Volume = 9.29 mL</h3>

Hope this helps you

6 0
3 years ago
The volume of a gas is the same as its _____.
AleksandrR [38]

The volume of a gas is the same as its CONTAINER.

Gases generally has no shape and no definite volume. When a gas is placed in a container, the gas usually takes the shape and the volume of the container, that is, the gas fills up all the available spaces in the container. Thus, the volume of a gas will always be the same as its container. This is in contrast with solids, which have definite shape and volume and liquids, which have definite volume but no fixed shape.

8 0
4 years ago
Read 2 more answers
Which has more particles, a mole of copper (Cu) atoms or a mole of neon
goldfiish [28.3K]

Answer:

D

Explanation:

it is neon because neon has a higher atomic number so it would have more protons and neutrons and electrons in one atom thus having more particles in one mole

7 0
3 years ago
Read 2 more answers
Other questions:
  • 100 ml of soft drink A contains 75g of sugar and weighs 110g. calculate density
    7·1 answer
  • Explain why the reactivity series must be used for single replacement reactions, but not for double replacement.
    11·1 answer
  • Which matter exists in the liquid state at room temperature? A. lead B. nebula C. apple juice D. carbon monoxide
    14·1 answer
  • The amount of ____ energy an object has depends on its speed and mass
    10·2 answers
  • What is bank?Effect of drug abuse.<br>​
    14·1 answer
  • HELP ME!!! What is the gravitational potential energy of a 200 Kg wrecking ball that is held up 25 m off the ground?
    14·1 answer
  • Which set is an example of an element, a compound, and a mixture?
    6·1 answer
  • What is the mass of 0.78 mol Mg(NO3),? Make sure to round to the correct number of sig figs and to include the unit in your fina
    11·1 answer
  • What is the percent composition of phosphoric acid (H3PO4)
    5·1 answer
  • What is the difference between a nucleus in Biology and Chemistry?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!