Hello, Tulips2411!!
A) Physical change doesn't change what the substance is. The actual physical property can change (appearance). For a chemical change, a new substance is formed and energy is given off or absorbed.
B) Metallic is the level of reactivity of a metal. Increased going down in a group. Non-metallic is the tendency to accept electrons during chemical reactions. They are increased from left to right in the periodic table.
C) Atoms are composed of protons, neutrons, and electrons. H+ (Hydrogen) atoms has 1 proton and 1 electron. Atoms that are the same element but have different number of neurons are known or referred to an isotope.
D) Electron affinity is energy that can change when a neutral atom attracts an electron to become a negative ion. Electronegativity is the ability of an atom in a molecule to draw bonding electrons to itself.
I hope I helped!! Have a great day!! :)
Answer:
8.33 atm
Explanation:
Xe is 5 out of (4+5) or 5 / 9 ths of the gas present
5/9 * 15 atm = 8.33 atm
Answer:
you would have 2.4 or 2 2/9
Explanation:
all you have to do is divide 9 and 22
Answer and explanation:
A museum curator is most likely an art conservationist. They would have to determine the age an art piece was developed and ways to preserve older artefacts.
These processes would require the use of chemicals and physical tests, and also research laboratories.
<em>I hope this answer is helpful and clear.</em>
Answer:
the Answer is B
Explanation:
If resources are being used faster than they are being replenished, then the species has exceeded its carrying capacity. If this occurs, the population will then decrease in size. Every stable population has one or more factors that limit its growth. A limiting factor determines the carrying capacity for a species.
hope this helps have a good day :)