Answer:
Explanation: that is .....
Answer: C
Explanation:
Velocity is displacement over change in time. It’s a vector quantity, so velocity must include direction. You’re changing the direction, but the speed stays the same, because you are still going 20 km per hr
Answer:
Isotopes of an element share the same number of protons but have different numbers of neutrons. Let's use carbon as an example. There are three isotopes of carbon found in nature – carbon-12, carbon-13, and carbon-14. All three have six protons, but their neutron numbers - 6, 7, and 8, respectively - all differ.
Explanation:
Answer:
One molecule is made of two or more atoms bonded together.
Explanation:
Molecule is a substance which is made up chemically by two or more same or different atoms. The atoms joint together in a molecule due to a chemical bond. This chemical bond is formed either by mutual sharing of electrons or transfer of electrons between two atoms.
Examples:
A molecule of H₂O (water) is made up of two atoms of Hydrogen and one atom of Oxygen (H-O-H).
A molecule of CO₂ (Carbon Dioxide) is formed when a carbon atom is bonded to two oxygen atoms via a double bonds (O=C=O).
A molecule of N₂ (Nitrogen Gas) is formed between two nitrogen atoms through a triple bond (N≡N).
