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Elden [556K]
3 years ago
15

Select the correct answer. Samuel adds a teaspoon of salt to a glass of water. He notices that the salt disappears. Samuel takes

a sip to discover that the water tastes salty. What kind of change has occurred? OA It's a chemical reaction because a new substance has formed. O B. It's a physical change because the water and the salt kept their original properties. O C. It's an example of synthesis because two substances reacted to give one substance. O D. It's a chemical reaction because the water now tastes salty but originally did not.
HELLLPPPP PLEASEEEEE!!!!!
​
Chemistry
2 answers:
harkovskaia [24]3 years ago
6 0
: B is your answer
:
Neko [114]3 years ago
4 0

Answer:

B. It's a physical change because the water and the salt kept their original properties.

Explanation:

Even though it tastes like salty water, the salt is still present, just in smaller molecules. It can be brought back so it is a physical change.

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Need help guys!!!!
Serhud [2]
A. When two chemicals mix their temperature rise: <span>Exothermic
b. </span>A solid burns brightly and releases heat, light and sound: <span>Exothermic
c. </span>When two chemicals are mixed their temperature drops: <span>Endothermic
d. </span>Two chemicals will only react if you heat them continually: <span>Endothermic
e. </span>Plants take in light energy for photosynthesis: <span>Endothermic

I hope this helps :)</span>
4 0
3 years ago
The dimensions of a cupboard are 1.31 m wide
Mnenie [13.5K]

Answer:

The volume of cupboard is 2.0043 m³.

Explanation:

Given data:

width of cupboard = 1.31 m

length of cupboard = 0.9 m

height of cupboard = 1.70 m

Volume = ?

Solution:

Volume = length × width × height

Volume = 0.9 m × 1.31 m × 1.70 m

Volume = 2.0043 m³

The volume of cupboard is 2.0043 m³.

4 0
3 years ago
Read 2 more answers
Barium (Ba) is an alkaline earth metal.<br><br>t or f
tatiyna

Barium is a chemical element with symbol Ba and atomic number 56. It is the fifth element in group 2 and is a soft, silvery alkaline earth metal. Because of its high chemical reactivity, barium is never found in nature as a free element. Thanks and I hope it helped.

8 0
4 years ago
True or False: Molar ratios come from the molar coefficients of balanced chemical reactions
jeka94

Answer:

1. true

2.true

3.fasle

Explanation:

sorry if im wrong.

have a lovely day.

7 0
3 years ago
Fill in the name and empirical formula
nadezda [96]

Answer:

1. Mg(CH3CO2)2  - magnesium acetate

2. NH4CN - ammonium cyanide

3. NaClO3 - sodium chlorate

8 0
4 years ago
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