Answer:
-Being in the service of quality, safety, designing and problem solving.
-It plays an importnat part in our lives too, to measure any surface, object, etc.
Explanation:
Measurement is perhaps one of the most fundamental concepts in science. Without the ability to measure, it would be difficult for scientists to conduct experiments or form theories.
The answer should be A, has more energy than it does in the ground state. De-excitation is removing electrons, so excitation would be adding more in to make it more stable. The ground state is what is considerd stable.
ANSWER: A
Answer:
A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust.
Explanation:
Answer:
false
Explanation:
the pressure exerted by a gas or liquid can move in all directions whether the fluid is still, if it's moving at a constant speed or if it's changing speed!
The properties of the elements can be determined from their electron configuration
<h3>Further explanation</h3>
- Mg ⇒electron configuration :[Ne] 3s²
outer electron : 2 (3s²)
lose(2 electron)
charge : +2
cation (positive)
symbol : Mg²⁺
- Br⇒electron configuration : [Ar] 4s²3d¹⁰4p⁵
outer electron : 7 (4s²4p⁵)
gain ( 1 electron)
charge : -1
anion (negative)
symbol : Br⁻
Helium⇒electron configuration : 1s²
outer electron : 2 (1s²)
stabil(no gain/no lose)
charge : 0
neutral
symbol : He
- Nitrogen ⇒electron configuration : [He] 2s²2p³
outer electron : 5 ( 2s²2p³)
gain(3 electron)
charge : -3
anion
symbol : N³⁻
