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raketka [301]
2 years ago
13

What are the rows of the periodic table called?

Chemistry
2 answers:
Gala2k [10]2 years ago
6 0

Answer:

B. Groups

Explanation:

tatyana61 [14]2 years ago
5 0
It would Be (D) periods !

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The concentration of hydroxide ions is greater than the concentration of hydronium ions for acidic solution. True or false.
larisa86 [58]

Answer: False

Explanation:

An acid is defined as the substance which looses hydrogen ion or hydronium ions when dissolved in water.

A base is defined as the substance which looses hydroxide ions when dissolved in water.

If the solution has higher hydronium ion concentration as compared to the hydroxide ion concentration, then the pH will be low and the solution will be acidic.

If the solution has low hydronium ion concentration as compared to the hydroxide ion concentration then the pH will be high and the solution will be basic.

5 0
2 years ago
The quantity of heat required to change the temperature of 1 g of a substance by 1°C is defined as ____.
Allushta [10]

Answer:

specific heat

Explanation:

please like,rate and tag as brainliest

5 0
3 years ago
What mass of calcium carbonate must be heated strongly to produce 1.12g of calcium oxide?
ra1l [238]
CaCO3=100g
CaO=56g
56g of CaO=100g of CaCO3
1.12g of CaO= 100/56*1.12 g of CaCO3
=2g of CaCO3 (ans)
4 0
2 years ago
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The eagle has landed was said when man landed on mars or on the moon
nekit [7.7K]
The moon, man has not been to mars yet
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3 years ago
1. Take a look at all the elements in period 3. What do you notice? *
Vedmedyk [2.9K]

Answer:

D

Explanation:

beacause all the elements in period 3 has different valence electrons hence you look at the first element in period 3 is sodium which has a valence electron of 1 when you go across the period to the right their valence electron decreases to be negative

5 0
2 years ago
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