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
Leokris [45]
3 years ago
7

Methods scientist use to determine a change in physical or chemical change in an Item

Chemistry
1 answer:
forsale [732]3 years ago
8 0
They'd observe any new substances or new color, and temp. that is irreversible. 

If this helped and you have any other questions, feel free to comment on my wall. Hope this helped.
You might be interested in
freezing a sealed full bottl of water leads to a broken bottle and freezing a sealed full flexible wall container of n butyl alc
Nataly [62]

Answer:

See explanation

Explanation:

We know that water begins to expand at 4°C. This is generally referred to as the anomalous behavior of water.

The implication of this is that ice has a greater volume than water. Thus ice is less dense than liquid water.

n-butyl alcohol has much less density than water. This accounts for the fact that water upon freezing breaks the bottle while n butyl alcholol leads to a container with concave walls.

Hence the density of ice is much higher than the density of n butyl alcohol.

4 0
3 years ago
Calcola la massa (in g) di un oggetto d'oro che ha
AfilCa [17]

translate please I'm confused

Explanation:

.

3 0
3 years ago
When can polar bears take care of themselves
Viefleur [7K]
around the age of two they might start to kinda ''leave''(or venture) there parents

5 0
3 years ago
An aluminum ion has a +3 charge. What change did the atom undergo to attain this charge?
lesya692 [45]
When an ion loses electrons, it becomes a positive ion even though it does not lose protons. If there are more protons than electrons in the ion, the ion will have a positive charge.
8 0
3 years ago
Calculate the number of atoms in 2 mol of sulfur dioxide (SO2).
Alex17521 [72]
Two moles of SO2 means 1.204x10^24 molecules, since there are 3 atoms in one molecule, multiply 1.204 x10^24 by 3 and you get 3.612x10^24.
7 0
3 years ago
Other questions:
  • What volume of a 2.5M NaOH solution is required to prepare 2.0 liter of a 0.75M NaOHv
    9·1 answer
  • A _____ fireplace continues to radiate heat even after the fire is extinguished.
    6·2 answers
  • You need to dissolve cacl2 in water to make a mixture that is 35% calcium chlorode by mass. if the total mass of the mixture is
    12·1 answer
  • Which of the following is not true regarding an acid?
    15·1 answer
  • What is the best description of the Bohr model of the atom? The atom consists of a positively charged material with negatively c
    9·2 answers
  • The volume and amount of gas are constant in a tire. The initial pressure and temperature are 1.82 atm and 293 K. At what temper
    9·1 answer
  • A strong compact cuticle makes for
    6·1 answer
  • Ok help it’s for homework
    15·2 answers
  • Identify the correct formula for each of the following acids. Click here to use the common polyatomic ion sheet if needed.
    13·1 answer
  • Which of the following molecules has a polar covalent bond?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!