CHEMISTRY MIDDLE SCHOOL

What are two ways to recognize a chemical change​

Answers

Answer 1
Answer:

Answer:

Two ways to recognize a chemical change are by change in temperature and change in color.

Explanation:
Answer 2
Answer:

Answer:

Two ways are:

Change in Temperature

Formation of Bubbles

Change in Color

Explanation:

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Pls Help! I have to come up with a funny name for my science project on growing mold on bread any ideas? oh and it cant be too long

Answers

the laser potato would be a good one
the laser photo go with that 

Erosion occurs when natural forces alter a landscape. What does it mean to alter a landscape w

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The question is asking "erosion occurs when natural forces alter a landscape. What does it mean to alter a landscape" - and the answer is that it means that something is changing how the landscape looks like. For example, a river would make a valley deeper through carrying stones with the water and removing sand from the bottom of the river, and so the valley would be altered, that is changed.

A landscape is said to be altered if its topography, vegetation, or general appearance are changed or modified.

An region of land's visible characteristics are referred to as its landscape, which includes both natural features like mountains, rivers, woods, and plains as well as man-made features like buildings, highways, and bridges. The distinctive appearance of a place is created by the interaction of built and natural factors. In addition to being visually appealing, landscape also has significant cultural, social, and ecological aspects. In order to capture its beauty and distinctiveness, it acts as a source of inspiration for writers, artists, and photographers. A community or region's identity, traditions, and feeling of place are all significantly shaped by the landscape.

To know more about landscape, here:

brainly.com/question/32183379

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What is the difference between conduction and convection?

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These are both ways heat travel. Conduction is when something is touching something i.e. When you touch a hot pan. Convection is heat rising, then cooling so it sinks and heats back up and rises again repetitively i.e. A convection oven (think circulation of heat)
CONVECTION is the transfer of heat from high temperature to low temperature with movement of mass or medium due to temperature difference in the region. Although, convection is a bit similar to conduction, but convection involves movement of substances. Such as wind system in our planet. Air moves due to temperature difference in every part of our planet. Then, CONDUCTION is the transfer of heat, of course from high temperature to low temperature when two objects (such as metals) are in direct contact (without the movement of metals).

The mass of an object is described in what??

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The mass of an object is measured in either grams or kilograms. Mass is best described as the amount of matter, or "stuff," in a solid, and is different from weight (which is the force of gravity on an object). Since mass is used with solids, it will be measured in grams or kilograms (rather than in something like liters, which would be used with the volume of a liquid). To measure mass, you can use a balance, for example a triple balance beam.

Question 9 (2 points)Calcium oxalate is an active ingredient in witch hazel. How many moles of CaC204 are in 50.0 g?
Оа
Ob
Ос
0.39 moles
6405.00 moles
128.10 g
2.56 moles
Review Answers

Answers

Answer:

0.39 moles

Explanation:

To find how many moles are in 50.0 g of CaC₂O₄ you divide the grams of the sample by the molar mass of the compound;

(50.0 g)/(128.097 g/mol)=0.39 mol

The grams cancel out and you are left with moles!

I hope this help ^-^
pretty sure it’s 0.39 moles

What happens to the average kinetic energy of gas particles as the temperature increases?a.) Increases

b.) Decreases

c.) Remains the same

d.) Volume changes

Answers

Temperature is the average kinetic energy so I would say the answer is A.
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