Physics Middle School

One type of cold remedy is an effervescent tablet that breaks down in water. When the tablet is placed in water, it forms gas bubbles. In this example, the formation of a gas
A is a physical property.
B occurs when adding water to acid.
Cis a sign of a chemical change.
D occurs when the water boils.

Answers

Answer 1

Answer:

is a sign of a chemical change

Explanation:

The tablet reacts with the water to form carbon dioxide

Answer 2
I think it’s C is a sign of a chemical change.

Related Questions

NEED ASAP BRAINLIST
How are planets affected by their location within the solar system?
Motion:
Shape of orbit:

Answers

Answer:

temperature

Explanation:

the temp is affected because of the distance from the sun

Answer:

Motion: Planets closer to the sun move faster.

Shape of orbit: Orbits are elliptically shaped and closer planets have shorter orbits.

Explanation:

Motion: Kepler's Second Law (An equal area is sweeped out by a planet's orbit at equal times), meaning that closer parts of the orbit are faster.

Help me, please!! No links :)

Answers

2 hours: 4400, 3 hours: 6600, 5 hours: 11000
2 hours: 4400
3 hours: 6600
5 hours: 11000
<3

How would conditions on Earth be different if its axis did not tilt? *
A There would be no seasons.
B There would be no years.
C There would be no temperature
D The equator would not be as warm in winter.

Answers

If the earth didn't have a tilt, we wouldn't have seasons. Instead, the environment would be unchanging, and the temperature would vary upon latitude. Equatorial regions would be constantly hot and humid, and polar regions would always be cold. There would no variability to the climate as the year progresses.
I think the answer is C

Help me with these questions thanks.

Answers

Answer:

2 c. is the answer

3 b. is the answer

The answer would be C for the first one and then B for the second

Plzz zzzzz help meeeee
In what way is this not a good model of how igneous rock forms?

Answers

Answer:

That's a great model

Explanation:

igneous rock is formed from magma

Which coefficient of friction describes a substance with barely any friction?
.5
1
.1
.01

Answers

Answer:

0.01

it has the least amount of resistance

How did amphibians adapt to their changing environment ?
A. They hibernated for many months in the winter .

B. The developed lungs and limbs .

C. they play dead to trick predators .

D . They developed fin and gills .

Answers

Answer:

I think it is B

LINK OR PDF = REPORT

Which statement explains how planets move in orbit as supported by Newton’s first law of motion?

Planets can change the direction of their own orbital path.
Planets can change orbits due to their inertia.
Planets in motion will have a constant speed unless acted on by an outside force.
Planets with a greater mass will orbit more quickly than smaller planets.

Answers

C

Explanation:

that's just what I learned in school

Planets in motion will have a constant speed unless acted on by an outside force (c)

A heater has a resistance of 10.0 Ω. It operates on a 12.0 V. What is the current through the resistor?
PLEASE GIVE ME THE CORRECT ANSWER!! (no links please.)
0.83 Amps
1.2 Amps
2.0 Amps
22.0 Amps

Answers

Answer:

1.2 amps :)

Explanation:

A heater has a resistance of 10.0 Ω. It operates on a 12.0 V. What is the current through the resistor?

         Known:

R = 10.0 Ω                            V = 12.0 V

       Unknown:

I = ???

I = V/R

= 12.0 V / 10.0 Ω

= 1.2 amps

Fill in the boxes and use a calculator to determine how long it would take each machine to travel 60 miles (in minutes). Use the speeds you previously calculated in miles per hour for each machine. Round answers to the nearest tenth (one decimal place).

NASCAR car =

Thrust SSC car =

TGV Train =

Spirit of Australia Boat =

Lockheed SR71 Airplane =

Answers

Answer:

5 is 4400 (2 hours), 6600 (3 hours), 1100 (5 hours)

Explanation:

If a 10 N force is acting downward on an object and a 5 N force is acting upward.
a. the object will move downward
b. the object will move upward
c. the object has a net force of 15 N
d. the object has a 15 N force downward
e. the object has a 15 N force upward

Answers

Answer:

a

Explanation:

I’m pretty sure that the answer is a
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