protons and the nucleus
Because protons has positive charge. Neutrons have no charge. Nucleus contains protons and neutrons, so it adds up to result in a positive charge.
HELPPPPPPP!!!!!!!!!!
Answer:
It is D
Explanation:
Im 90% percent sure
PLS ANSWER CORRECTLY 50 POINTS AND BRAINLIEST!!!
During an investigation, a scientist burned 48 g of magnesium strip. After the reaction, the total mass of the product formed was found to be 80 g. Does the law of conservation of mass hold true in this case? Use complete sentences to justify your answer based on numerical calculations.
Answer
yes
Explanation:
the law of conservation of mass hold true in this case burning magnesium strip is explained by this equation 2 Mg (s) + O2 (g) -> MgO (s)So the lighter magnesium, after reacting with oxygen in air, forms the heavier magnesium oxide. molar mass of magnesium and magnesium oxide are 24g and 40g respectively. So the same ratio 24:40 (i.e. 3:5) is maintained in the given masses of 48g and 80g, which means mass is conserved in the reacion.
What is the one or two letter character used to identify an element?
element symbol
chemical symbol
chemical name
atomic letters
Sahil watched a demonstration in which a scientist combined two substances in a sealed container and analyzed the results. The ending substances did not look the same as the starting substances.Sahil was given a diagram with the repeating groups of atoms that make up the starting substances, plus information about the properties of the starting and ending substances. He created a model of the repeating groups of atoms that might make up the two ending substances.Does his model correctly show why the properties of the ending substances are different from the properties of the starting substances? Describe what could be correct or incorrect about his model.
This model correctly show the chemical reaction that take place in this model.
Is this model show correctly the process?This model correctly show the properties of the ending substances that are different from the properties of the starting substances because the properties of product are different from the reactants.
So we can conclude that this model correctly show the chemical reaction that take place in this model.
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Having to do with turning a fraction over defines the word _____.
-Inertia
-Inversely
-Force
-Proportional
Answer:
inertia
Explanation:
Answer:
Inversely
Explanation:
HMH Daily Demo Lab: Water Magic
Electric Charge (guided inquiry)
Purpose: To show how matter becomes charged by induction
Materials: comb, sink with working faucet
Predict: Predict what you think will happen to the charges of the comb and water if the comb comes in contact with the water. Record your hypothesis before following the directions below to carry out the lab experiment. The charges would attract. How and why is what I don’t know.
Directions:
1. Turn on a faucet just enough to allow a thin stream of water to flow.
2. Have a student volunteer-run a comb through his/ her hair a few times.
3. Observe. Tell the student to hold the comb near, but not touching, the stream of water.
4. Answer all questions below in complete sentences, using the R.A.C.E. strategy.
Ask and record your findings: What do you observe? Describe. I observed the stream of water bend toward the comb. I gave the comb electric charge by passing a comb through my sister’s hair and that allowed the comb to bend the stream of water.
Ask and record your findings: What does this indicate (show)? Explain. I
Observe:
1. To test students’ predictions, have the student volunteer pass the comb through the water.
2. Then have them move the comb so that it is near but not touching the water.
Ask and record your findings: What do you observe? Describe. WILL GIVE BRAINLIEST
Homeostasis means maintaining
Your answer:
varied internal conditions.
varied offspring.
similar offspring.
stable internal conditions.
plz help this for sience
Name 1 object that you would use the following types of measurements for; Mass, Volume and Density.
I need this by 8:30
Define the kinetic theory of matter (use these words “explains, energy, particles, increase, decrease.”
Answer:
The kinetic theory of matter explains that all matter is made of particles which are constantly moving/have energy. The energy varies depending on the temperature of the matter, therefore determining if the matter is solid, liquid, or gas. When the energy of a particle is increased or decreased, a phase change can occur.
2 questions
Popeyes or KFC
Mcdonalds, Wendys, Burger King, Shake Shack, or Chick Fil A
Answer:
Chick-fli-a
Explanation:
Answer:
Chick-Fil-A
Explanation:
1. The whole world is __________________ with rocks.
2. Rocks have / have never been melted or molten at some time.
3. Bubbles / Lines in some rock were formed by chemical reactions in the rock when cool.
4. Wind and ____________________ moving over the surface break rock down into sand.
5. Soil comes from ______________________ which comes from rocks.
6. Igneous rocks come from the word _____________________ meaning fire.
7. Sedimentary rock has layers because sand / boulders are washed downstream and settle on the bottom.
8. ____________________ rock is a combination of the other two and has changed into new rock.
9. Rock can change into sand and sand can then change into ________________ over many years.
10. ________________ in farmland has a lot of living things in the top layer or horizon.
11. A huge flood happened in Washington State when a(n) ___________________ broke.
12. Only water / several things can change the shape of the land.
13. Diamonds are the _________________ substance known to us.
14. Rocks are formed by wind, ________________ heat, and water and change from one type into another.
15. Sedimentary rocks are made from sand and _____________ compressed under heat and pressure.
Answer:
The whole world is covered with rocks.
Examples and connections to the word: Digital. Will give brainliest. 3 for each!
Answer: I think this is what your working for.
Examples of digital media include software, digital images, digital video, video games, web pages and websites, social media, digital data and databases, digital audio such as MP3, electronic documents and electronic books.
An element’s properties can be predicted from _____.
the number of its neutrons
its atomic mass
its location in the periodic table
the number of its electrons
A periodic table can be used to forecast an element's properties. As we drop into a group or go across a period in the Periodic Table, we can observe a variety of patterns in the physical and chemical characteristics of the elements. The correct option is C.
Each element's location in the table provides crucial details regarding its composition, characteristics, and behavior during chemical reactions. In particular, you may determine an element's electron configuration that is, how the electrons are arranged around the nucleus by looking at where it is in the periodic table.
The group (vertical column) number in the Periodic Table can be used to calculate an element's number of valence electrons. The chemical characteristics of elements with the same number of valence electrons are comparable.
Thus the correct option is C.
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