Please answer the following essay question with 5-7 sentences.
How is a chemical change different from a physical change?

Answers

Answer 1

Answer:

Step-by-step explanation:Physical changes only affect the physical properties, such as color, texture, and shape, of a substance. When a substance is changed physically, its chemical properties remain the same. On the other hand, a chemical change alters the chemical properties of a substance.During a physical change the elements and compounds stay as they are.While Chemical changes make new substances.

Answer 2
In a physical change the appearance or form of the matter changes but the kind of matter in the substance does not. However in a chemical change, the kind of matter changes and at least one new substance with new properties is formed. The distinction between physical and chemical change is not clear cut

Related Questions

Which value of t is a solution to this equation?
t–10=1

Answers

Answer:

t=11

Step-by-step explanation:

10+1=11

to check

11-10=1 YUP

Answer:

11

Step-by-step explanation:

10+1 would  equal 11 so 11-10=1        11

                                                   10        1       Fact families

ILL GIVE BRAINLIEST.

This is a simple graph, but I want to know if I’m right. If the line goes through the origin does that automatically mean it’s positive?
And when it doesn’t go through the origin does that mean it’s automatically negative?
THANK YOU.!

Answers

Answer: This is a negative graph and it is proportional because it goes through the origin.

Step-by-step explanation:

Just beacause it goes through the origin does not mean it will be positive nor negative, if the line goes from the top left of the grid slanted down, it is negative. If the line goes from the top right of the graph slanted down, it is positive. It is proportional because it is a straight line that goes through the origin.

Answer:Under↓↓↓

Step-by-step explanation:

Ok so in this case it's a negative slope, because the line is going from left to right.

If the line was going form right to left then It would be a positive slope.

Can someone help me with this problem

7.984 ÷ 1.99

Answers

Answer: 4.012

Step-by-step explanation: Hope this helps! :)

y+16= -8
Another Question heheh

Answers

Answer:

y = -24

(mark me brainliest)

y=-24
To solve this you need to get y by itself so you have to move 16 to the other side. To do this you are doing to do the opposite of what it says so since on that side it’s addition you are going to subtract. Subtract 16 from 16 which cancels it out, then subtract 16 from -8 to get -24. Now you have y=-24

Write the expression 8⋅x⋅x⋅y⋅y⋅y using exponents...

Answers

8 x x2 x y3 is the answer!
That’s the correct answer

If y varies directly with x and y = 24 when x = 6, find x when y = 44.

Answers

Answer:

11

Step-by-step explanation:

11 because it adds up

A number line going from 0 to 4 in increments of 1. There are 3 equals spaces between each number.
Find: 11
3
÷ 2
3

The quotient is 5 and
.

Answers

Answer:

11/3 divided by 2/3 = 5.5 or 11/2

Step-by-step explanation:

Answer:

1/2

Step-by-step explanation:

xd

HELP PLEASE!!! it's due today

What is the total displacement of the car after 5 h?


0 km


15 km


20 km


40 km

Coordinate graph with title Displacement versus Time for a Car, showing Time in hours from zero to five over horizontal axis and Displacement in kilometers from zero to twenty five over vertical axis. A line is plotted on the graph, starting from origin and peaking at twenty before moving toward horizontal axis and intersecting it at five

Answers

Answer:

It's right there on the graph ! At 5 hours, the displacement is zero.

"How can that be ?", you ask.

That's a great question.

The car started out, drove farther and farther from home for the first 4 hours, then drove back home during the 5th hour. It's all right there on the graph.

Step-by-step explanation:

The person above me should be correct but just for your double reinsurance that they are correct! Have a nice day! ;)

Delia uses 3.5 skeins of yarn to knit one scarf. How many scarves can she complete if she has 19 skeins of yarn?

Answers

Answer:

4 scarfs

Step-by-step explanation: 19 divided by 3.5

Four scarfs ..........

help please its hard for me:(

Answers

Answer:

The first one is 60 the second one is 150 and the third one is 2

Step-by-step explanation:

60 150 2
Hope it helped

Find -8 ÷ - 1/2

1/16
- 1/4
16
-4

Answers

Answer:

who else got four

Step-by-step explanation:

Answer:

16

Step-by-step explanation:

:D

THE TRUE STATEMENTS ARE________ , _________ and _________ .
please help I really need help

Answers

Answer:

a,b,e

Step-by-step explanation:

I think it’s a e b for the answer.

ANSWER ASAP DUE AT 3:00 PM
Please answer the following essay question:

Explain how to compare two fractions that have the same numerator and different denominators. Use an example to help justify your response.

Answer in paragraph form using complete sentences and include any calculations, graphs, and labeled diagrams as appropriate..

Answers

Answer:

Step-by-step explanation:

2 fractions with the numerator and different denominators can be compared when you find the lowest common denominators (LCD. For example 1/2 and 1/3 have the same numerator, but the denominators are not so you have to find the LCD. The LCD, in this case, is 6, so the fractions would be 3/6 and 2/6 and now if you compare you can tell that 3/6 is greater than 2/6 so 1/2 is greater than 1/3.

Answer:

Answer is down below :D

Step-by-step explanation:

A numertator is the top number and the denominators are the bottom number of a fraction. You can tell the difference because if you look at the top number of one fraction and you look at the other that you're supposed to compare and there the same number, then they are the same. For example, 1/2 and 1/3 have the same numetators but not denominators. Now for denominators you have to look at the bottom number but if the two fractions you're comparing have the same bottom number then there the same, but if they have two different bottom numbers, then they are not the same. For example again: 1/3 and 1/9 The may seem the same but there not since the bottom number is different.

Determine the value of the expression below.
7^2-9
----------
3+2

Answers

Answer:

1. 7^2-9 = 40

3+2 = 5

40 / 5

8

what is 20+20. i need an answer now

Answers

20 plus 20 equals 40 so answer: 40
40 because you add 20 to 20

For what value of b, would the equation 3/4(12x−9)+b/4=5−3(2−3x) have infinitely many solutions?

b = ____

Answers

B=23
It may even be wrong

When the value of b is 23 then the equation 3/4(12x−9)+b/4=5−3(2−3x) have infinitely many solutions.

When does a system of linear equation have no solution?

When both the lines(represented by both the equations) are parallel and not coincident, then that system of linear equations have no solutions as there is no common point on both line.

If they are coincident, then there will have infinite solution since in that case, they will have infinite points in common.

Thus, if two lines are not in any of above case, they intersect at single point and in that case, the considered system of equation has unique single solution.

The equation 3/4(12x−9)+b/4=5−3(2−3x) have infinitely many solutions.

When b = 23 ,

3/4(12x−9)+b/4=5−3(2−3x)

When the value of b is 23 then the equation 3/4(12x−9)+b/4=5−3(2−3x) have infinitely many solutions.

Learn more about the case of 'no solution' here:

https://brainly.com/question/26254258

#SPJ6

What is 5x+y=45 in slope intercept form?

Answers

Answer:

y=-5x+45

Step-by-step explanation:

slope intercept form is : y=mx+b

5x+y=45

answer: y=-5x+45

I NEED THIS ASAP
WHICH STATMENT SHOWS THE ASSOSIATIVE PROPERTY OF ADDISTION
A. 23 +6Y=6Y+23

B. 13+(K+5)=(13+K)+5

C. 13 . (K.5)=(K.5).13

D. 13 .(K.5)= (13.5).5

hurry AND JUST WRITE THE LETTER

Answers

C.13.(k.5)=(k.5).13 good luck

Answer:

k=1

Step-by-step explanation:

khan said so

Of 630 seats in the cafeteria, 70% are in use. How many seats are being used?

Answers

Answer:

70

Step-by-step explanation:

630 divided by 70 is 9, so then you take 630 again and divide it by 9 to get 70

The answer would be 441 seats are being used.

I know this because if you set up the equation as a fraction you will get:

x/630 and 70/100

if you multiply 630 by 70 you get 44100,
but you then take the 100 and divide 44100 by 100 and you get 441 using the cross multiply method.


i hope this helped!

In an election, Mr. Jones received 70% of the 1,500 votes cast. How many votes did Mr. Jones receive?

Votes Cast
10%
10%
10%
10%
10%
10%
10%
10%
10%
10%


A. 900
B. 1,050
C. 1,125
D. 1,200

Answers

Answer:

B. 1050

Step-by-step explanation:

With receiving 70% of the 1,500 votes, Mr. Jones overall ended up receiving 1050 votes.

70% of 1500 is equal to (70 × 70) / 100 = 1050.

Answer:

B) 1,050

Step-by-step explanation:

70% of 1,500 is 1,050

What is 4.37 multiplied by 0.68?

Answers

Answer: 4.37 multiplied by 0.68 is 2.9716.

4.37×0.86=2.9716

Hope this helps!

The answer is 2.9716

Find the circumference of the circle in terms of π (pi)
A. 6π cm
B. 9π cm
C. 12π cm
D. 36π cm
(the radius is 6cm)

Answers

The answer is C I believe

Answer:

36 (pi) cm

Step-by-step explanation:

C= 2(pi symbol lol)(6)

2(3.14)(6)=

37.68 which is the closest to d

Select the sentence that represents the equation below. 4x−8=2(2x−3)

Question 9 options:

A. Four times a number less than eight is equal to two times the difference of double
that same number decreased by three.

B. Eight less than four times a number is equal to two times the difference of three minus double that same number.

C. Eight less than four times a number is equal to two times the difference of double that same number decreased by three.

D. Eight minus four times a number is equal to two times the difference of double that same number minus three.

Answers

Answer:

the answer is c, that represents the equation

Answer:

Pretty sure it's B.

Yesterday, Grace drove 20 1/4 miles. She used 11/4 gallons of gasoline. What is the unit rate for miles per gallon?

Answers

Answer:

7.363636 miles per gallon

Step-by-step explanation:

Which statements accurately describe how to determine the y-intercept and the slope from the graph below? On a coordinate plane, a line goes through points (0, negative 6) and (3, 0).
A)To find the y-intercept, begin at the origin and move horizontally to the graphed line. To find the slope, use two ordered pairs on the line and substitute into the equation m = StartFraction y 2 minus y 1 Over x 2 minus x 1 EndFraction.
B)To find the y-intercept, begin at the origin and move horizontally to the graphed line. To find the slope, use two ordered pairs on the line and substitute into the equation m = StartFraction x 2 minus x 1 Over y 2 minus y 1 EndFraction.
C) To find the y-intercept, begin at the origin and move vertically to the graphed line. To find the slope, use two ordered pairs on the line and substitute into the equation m = StartFraction y 2 minus y 1 Over x 2 minus x 1 EndFraction.
D)To find the y-intercept, begin at the origin and move vertically to the graphed line. To find the slope, use two ordered pairs on the line and substitute into the equation m = StartFraction x 2 minus x 1 Over y 2 minus y 1 EndFraction. :')

Answers

Answer:

C?

Step-by-step explanation:

Sorry I tried im dumb

Using the graph below, find the missing value to complete the t-chart. x y -3 5 0 -1 2 ? -3 5 3 -5

Answers

I don’t understand the question. Please show a picture.

Chose all of the values that are less than the mean of the data set shown.
4, 6, 7, 9, 10, 4, 6, 5, 4

A. 8.1
B. 4.9
C. 6
D. 6.2
E. 7

PLEASE ANSWER FAST! WILL GIVE BRAINLIEST TO WHOEVER ANSWERS FIRST! THX

Answers

Answer:

B and C

Step-by-step explanation:

did type just 4.9 but mb

A. They both have a positive correlation, but Graph 1 has a stronger association. B. They both have a positive correlation, but Graph 2 has a stronger association. C. They both have a strong association, but Graph 1 has a positive correlation while Graph 2 has a negative correlation
d. They both have a strong assoication, but Graph 1 has a negative correlation while Graph 2 has a positive correlation​

Answers

the answer is b (they both have a positive correlation)

The comparison between the two graphs is that: B. they both have a positive correlation, but Graph 2 has a stronger association.

What is a positive correlation?

A positive correlation refers to a terminology that describes a scenario in which two or more variables move in the same direction and are in direct proportion.

This ultimately implies that, a positive correlation exists in a graph when its variables have a linear relationship or are in direct proportion.

Based on the graphs attached in the image below, we can deduce that the two graphs both have a positive correlation, but Graph 2 has a stronger association.

Read more on positive correlation here:

brainly.com/question/3753830

#SPJ2

Car A is traveling east at a steady speed of 40 miles per hour. After 2 hours, it
is 95 miles east of Johnstown.
Car B is traveling east on the same road. Its distance east of Johnstown is
represented by the graph.
Miles east of Johnstown
200
180
160
140
120
100
40
Time (hours)
Where were the two cars in relation to each other when they began traveling?
C A. Car A was 5 miles east of car B
B. Cor B was 5 miles east of car A
C. Car B was 20 miles east of car A
D. Carwa 15 miles east of car B

Answers

Answer:

A BECAUSE IT WAS AHEAD BY 95

Step-by-step explanation:

A is the correct awnser

The table lists recommended amounts of food to order for 25 party guests. Nathan is hosting a graduation party for 40 guests. There will also be guests stopping by for a short time. For ordering​ purposes, they will count each of the 45​ "drop-in" guests as half a guest. How much of each food item should Nathen order?
will make branliest!!

Answers

Answer:

63 pieces of chicken 9.73 pounds of deli meat and 28.49 pounds of lasagna

Step-by-step explanation:

There will be approximately 62.5 guests but you cant have half of a person so lets round up to 63 just to be safe and we will round

He needs to order 2.65 orders so he doesn't have to much extra.

24x2.65=63.6

3.67x2.65=9.7255

10.75x2.65=28.4875

i hope this helps

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