CHEMISTRY HIGH SCHOOL

Please help!!! Thank youuu I’ll give brainlist to first to get them right

Answers

Answer 1

Answer:

questions 3 gravity

question 1 meteorites

question 2 orbit

question 4 rocket and gaseous

Answer 2

Answer:

Answer:

1. moons 2. orbits 3. gravity 4. rocky, gaseous

Explanation:

Related Questions

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Within a particular compound, an atom gives up two electrons. This atom is A. part of a covalent compound.B. positively charged.C. negatively charged.D. not part of an electrolyte.
Which of the following chemical equations is balanced?2 Al + 2 CuO ----> A1,0, + 2 CuFe, 0, + 3C --> 2Fe + 3 CO,2 SO, + 02 S0, + 0, ---> 2 SO,2 Ag,0 ----> 2 Ag + O2> 02
What relationship do you observe between the temperature and density?
Which statement about the density of warm water is most likely correct?Warm water is more dense than cold water. Warm water is less dense than cold water. The density is the same for warm and cold water. The density will sometimes be higher for warm water and other times higher for cold water.

If 10 milliliters of liquid has a mass of 70 grams, what is its density?O 7 g/mL
70 g/mL
0.7 g/mL
700 g/mL

Answers

Answer:

The answer is 7 g/mL

Explanation:

The density of a substance can be found by using the formula

$density = (mass)/(volume) \n$

From the question

mass = 70 g

volume = 10 mL

We have

$density = (70)/(10) \n$

We have the final answer as

7 g/mL

Hope this helps you

Identify the effect of increasing acidity on the solubility of the given compounds.

Answers

An addition of acid increases the solubility of calcium phosphate because the hydrogen ions can easily dissociate and form salts. And example is from the reaction 3H2SO4 + Ca3(PO4)2 → 2H3PO4 + 3CaSO4. CaSO4 is the salt of sulfuric acid and calcium phosphate.

Select all of the answers that apply.A meteorologist predicts fog in the morning over lakes and river bottoms because of the atmospheric conditions and their interactions with the _____.

lithosphere
hydrosphere
biosphere
geosphere

Answers

A meteorologist predicts fog in the morning over lakes and river bottoms because of the atmospheric conditions and their interactions with the hydrosphere. The hydrosphere is the region on the Earth's surface where the total water on the planet is found. The hydrosphere can be in the form of liquid, vapor, or ice.

Is the osmosis egg challenge a chemical reaction? If so, was the stored energy in the reactants released (exothermic) or absorbed (endothermic) during this physical change?
If not, was energy released (exothermic) or absorbed (endothermic) by the molecules during this physical change?

Answers

Answer:

Answer is C because in exothermic reactions, energy releases.

in Cellular respiration,

ATP+H20 (water) = ADP+ Pi + Energy

So celullar respiration is exothermic and releases energy

Answer:

yes it is

Explanation:

because what ever you mix in it it would explode and give a chemical reaction

When does phenolphthalein turn pink?a) in the presence of a base

b) in the presence of an acid

c) when it is in a neutral solution

d) when it is reacting with a metal

Answers

Answer is: a) in the presence of a base.

Phenolphthalein is colorless in acidic solutions and pink in basic solutions.

Acid-base indicators are usually weak acids or bases and they are chemical detectors for hydrogen or hydronium cations.

Example for acid-base indicator is phenolphthalein (molecular formula C₂₀H₁₄O₄).

When solution turns phenolphthalein pink, it means it is basic (pH>7).

Final answer:

Phenolphthalein turns pink in the presence of a base.

Explanation:

Phenolphthalein turns pink in the presence of a base. It is a pH indicator that changes color depending on the acidity or alkalinity of a solution. In an acidic solution, phenolphthalein remains colorless, while in a basic solution, it turns pink.

Learn more about Phenolphthalein turning pink here:

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True or False: Since baking soda is a powder, all the substances it breaks down intoare also powders.

Answers

False; Sodium hydrogen carbonate (also known as sodium bicarbonate or bicarbonate of soda) has the chemical formula NaHCO3. When it is heated above about 80°C it begins to break down, forming sodium carbonate, water and carbon dioxide. This type of reaction is called a thermal decomposition.

Other Questions

Which is the correct order of increasing standard molar entropy for the noble gases?He ≤ Ne ≤ Kr ≤ ArHe ≤ Ne ≤ Ar ≤ KrNe ≤ He ≤ Ar ≤ KrKr ≤ Ar ≤ Ne ≤ He

Where are the alkali metals and the halogens located on the periodic table?

If you eat foods that are compact and _______, more can fit into your stomach with less discomfort.A. denseB. dryC. puffedD. tasty

What is the oxidation number for sodium?A 2-B 1+C 2+D 1-