Answer:
electrons or protons
Explanation:
This statement only applies to neutral atoms where the number of protons and electrons is equal
Please helpp!!!!!!!!
If the pattern of ions shown here for galena is expanded in every direction, how many sulfide ions would surround each lead ion? How many lead ions would surround each sulfide ion?
Answer:
the answer is the earths crust because those are the icons surrounded each sulfide.
Explanation:
hope this helps!!! i love science/cemistry
Where does energy for all living things come from FIRST
Answer:
The Sun is the major source of energy for organisms and the ecosystems.
Explanation:
at least two examples
of Chemical Formula
Explanation:
Rotting, withering, heat and light emission, precipitate formation, gas evolution, or a change of appearance.
Answer:
h20 (water duh)
C9H13N (Amphetamine)
C6h1206 (glucose)
Answer please 10 points
Answer:
water
Explanation:
Answer:
Water
Explanation:
Most of the Earth is covered with water, so water is the substance.(H20)
Definition: Water that falls to the ground as rain
Help! Quicklyyyy! Easy science thing.
Answer:
A year too late..
Explanation:
PLEASE HELP ME ITS DUE IN 1 HOUR PLZZZ
In a __________________ reaction, elements are not changed, just rearranged. Small amounts of energy take place.
a. Endothermic
b. Exothermic
c. Nuclear
d. Chemical
Answer please 10 points science queasy
Answer:
B
Look up cumulonimbus clouds it looks like b
The Dust Bowl was a time In the 1930s when prairie states in the Midwest had farmlands torn apart by wind erosion and storms. This disaster caused food shortages and financial hardship. What practice is most helpful to prevent another similar tragedy?
A. no-till farming to allow roots to hold soil together
B. over watering of fields to keep soil wet
C. terrace farming by putting walls up on hills
D. agricultural reform to change the types of crops planted
Answer:
C
Explanation: The dust bowl killed many crops resulting to low nutrients
can you please help. I don't know how to do it.
The area used to be covered by an ocean
How should Point 2 on the Land Breeze diagram be labeled?
a
Cool air, high pressure
b
Cool air, low pressure
c
Warm air, high pressure
d
Warm air, low pressure
What reaction type is MgCl2 ---> Mg + Cl2 ?
a. Synthesis
b. Single Replacement
c. Double Replacement
d. Decomposition
Answer:
A.Synthesis
Explanation:
What reaction type is MgCl2 ---> Mg + Cl2 ?
a. Synthesis
b. Single Replacement
c. Double Replacement
d. Decomposition
Answer
A. Synthesis.
the atomic number of an element is the number of ______ plus the number of _____ found in the element's nucleus.
Answer:
protons and electrons
Explanation:
The symbol for an atom can be written to show its mass number at the top, and its atomic number at the bottom. To calculate the numbers of subatomic particles in an atom, use its atomic number and mass number: number of protons = atomic number. number of electrons = atomic number.
Please help me with this question
Answer:
B
Explanation:
Is there a relationship between cohesion and volume?
Melvin is exploring the different kinds of changes that can happen to substances. After reading about the kinds of changes that occur, he saw some rust on a pipe that was going into his house. What kind of change is the formation of rust?
A.reactant
B.physical
C.chemical
Answer:
It is B. physical.
Explanation:
The rust on the pipe is something causes by something, which mean it is physical. Hope this helped you out!!
Have a wonderful day! :D
Help me with this please! Do not say "I don't know" to get my points!!!!!!! It is not helpful and disrespectful. THANKS!
no- and na- nano5
na- and na+ nana2
hope this helps
Explanation:
Why do you think the Na+ ion is smaller than a neutral Na atom? Why do you think the Cl - ion is larger than a neutral Cl atom?
Answer:
Na+ ion is smaller than a neutral Na atom in the ion there was one more proton which will attract electron bring it closer to the center making the atomic radius smaller. Therefore making a Na+ ion is smaller than a neutral Na atom Explanation:
yes
Why does the Earth spin faster at the equator than the poles?
a
Due to the temperature differences on Earth, the land/sea near the equator goes at a faster rate. The Earth spins faster there only during the summer months.
b
The Earth is much wider at the equator than at the poles. It must cover a larger distance in the same amount of time (24 hours).
c
Due to the tilt of the Earth on its axis, the equator gets more sunlight -- therefore making it spin faster.
Answer:
Specifically, Earth rotates faster at the Equator than it does at the poles. Earth is wider at the Equator, so to make a rotation in one 24-hour period, equatorial regions race nearly 1,600 kilometers (1,000 miles) per hour. Near the poles, Earth rotates at a sluggish 0.00008 kilometers (0.00005 miles) per hour.
When an apple falls from a tree, when does gravity act on the apple?