The protons inside an atoms nucleus help bind the nucleus together. They also attract the negatively charged electons
A chemical reaction (signs)
- rusting
- change in base of chemical
- for example lets say u mix two chemicals, and then it becomes a different new chemical (it changed from the inside)
a physical
- a physical reaction is outer looks not inside.
- it changes on the outside, like changing a color
Answer:
Vaccines include a variety of ingredients including antigens, stabilizers, adjuvants, antibiotics, and preservatives. They may also contain residual by-products from the production process.
Answer:
![a=200\ m/s^2](https://tex.z-dn.net/?f=a%3D200%5C%20m%2Fs%5E2)
Explanation:
Given that,
The mass of a ball, m = 0.025kg
The force exerted by the magnet, F = 5 N
We need to find the acceleration of the ball when it begins to move. Let a be the acceleration. The net force of the ball is given by :
F = ma
Where
a is acceleration of the ball
![a=\dfrac{F}{m}\\\\a=\dfrac{5}{0.025}\\\\a=200\ m/s^2](https://tex.z-dn.net/?f=a%3D%5Cdfrac%7BF%7D%7Bm%7D%5C%5C%5C%5Ca%3D%5Cdfrac%7B5%7D%7B0.025%7D%5C%5C%5C%5Ca%3D200%5C%20m%2Fs%5E2)
so, the required acceleration of the ball is
.
Answer:
C) ionic compounds
Explanation:
Addition of ionic compounds, such as inorganic salts, to pure water causes the greatest increase in conductivity because these substances are strong electrolytes and completely dissociate and produce ions.