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coldgirl [10]
3 years ago
10

When a cracker or bread dissolves in your mouth, is that a physical or chemical change?

Physics
2 answers:
BabaBlast [244]3 years ago
8 0
Physical because ur making dissolve
Anettt [7]3 years ago
3 0

Answer:

<u>Chemical change.</u>

Explanation:

The saliva or salivary amylase is a bio-catalyst...it causes chemical change during the dissolving process. Also, once the food is dissolved it can't be brought back to it's original state.

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After rubbing a balloon on your shirt, your hair sticks up when the balloon is near your head. Explain how tiny particles on you
skad [1K]
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3 0
2 years ago
How many minutes would it take a light wave to travel from the planet Venus to Earth? (Average distance from Venus to Earth = 28
Gnesinka [82]

Answer:

t=2.51min

Explanation:

The time taken by the light to travel a given distance is defined as:

t=\frac{d}{c}

Here c is obviously the speed of light. Now we convert the average distance form Venus to Earth to meters:

28*10^{6}mi*\frac{1609.34}{1mi}=4.51*10^{10}m

Finally, we calculate the minutes taken by the light to travel from Venus to Earth:

t=\frac{4.51*10^{10}m}{3*10^8\frac{m}{s}}\\t=150.33s*\frac{1min}{60s}=2.51min

6 0
3 years ago
What type of image can be larger or smaller than the object?
Stolb23 [73]
It’s D. An enlargement (hope this helps!)
4 0
3 years ago
If we think of the value system, as a river, and each stop along the river is a port where value was added. What was the startin
denis23 [38]

Answer:

The raw materials.

Explanation:

The starting point of every manufactured object is the raw material. In the value system of the film industry, the starting point is the raw material which includes chemicals used in the manufacture of films and cameras.

Therefore, If we think of the value system, as a river, and each stop along the river is a port where value was added. The starting point, the furthest upstream, in the value system in the film industry is the raw materials.

6 0
3 years ago
This force is involves the attraction between charged particles
Nikolay [14]
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6 0
3 years ago
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