1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Inessa05 [86]
3 years ago
9

Describe and explain the trends in reactivity in different groups of the periodic table, using your knowledge of electronic stru

cture. [6 mark]
Chemistry
1 answer:
Alex777 [14]3 years ago
6 0
Metal period- Reactivity Gets smaller as you move from left to right.
Group- Reactivity  gets bigger as you move down a group.
You might be interested in
This chemical equation represents the burning of methane, but the equation is incomplete. What is the missing coefficient in bot
Zolol [24]
CH4+(x)O2=CO2 +(Y)H2O
C=1 +H=4 +O=? = C=1 +O=2+? +H=?
H=4>>Y=2
C=1 +H=4 +O=? = C=1 +O=(2+2) +H=4
C=1 +H=4 +O=4 = C=1 +O=4 +H=4
O=4>>X=2
CH4+(2)O2 =CO2 +(2)H2O

6 0
3 years ago
Read 2 more answers
A sample of paraffin wax undergoes the following change: C25H52(s) → C25H52(l)
nalin [4]

Answer:

Explanation:

(a) Answer: Intermolecular forces

The reason for this answer is because the substance (paraffin wax) only changed it's state from solid to liquid and didn't undergo a breakage in it's covalent bond within it's carbon chain which would have produced another substance.

(b) Solid substances are generally more dense than there corresponding liquid substances because the more compact particles are (which occurs in solids), the more dense they become. They are thus more dense than liquids because liquids have there particles loosely packed and well spaced making them less dense than there corresponding solids. Hence, the solid paraffin wax was going to become less dense because it's particles moved from being tightly packed (as solids) to being loosely packed (as liquids). Density refers to mass per volume but can also be described as the level of compactness of a substance. Thus, since liquid is not as compact as solid, it can be said to be less dense than solids.

5 0
3 years ago
How is a crystal different from a solid made of individual molecules
Dmitry [639]
In a crystal, the molecules are closer together as they are in any solid. they have less room to move, and might even be combined together rather than individual

3 0
3 years ago
Which statement best illustrates vibrational motion?
jekas [21]
C. Cello playing music at a concert
8 0
3 years ago
Read 2 more answers
Balance this equation: Al+ HNO3 ---- H2 + Al(NO3)3​
romanna [79]

Answer:

2Al+ 6HNO3 ---- 3H2 + 2Al(NO3)3​

Explanation:

Put coefficient a,b,c, and d for calculation:

a Al + b HNO3 = c H2 + d Al(NO3)3

for Al: a = d

for H: b = 2c

for N: b = 3d

for O: 3b = 9d

Suppose a=1, then d=1, b=3, c=3/2

multiply 2 to make all natural number, a=2, then b=6, c=3, d=2

6 0
3 years ago
Other questions:
  • In which situation can a mixture always be called a solution?
    13·2 answers
  • which of the following is the smallest in volume? nucleus of oxygen atom, water molcule, protron, ice crystal, electron cloud of
    14·1 answer
  • The reactants of two chemical equations are listed.
    8·1 answer
  • Below is a proposed mechanism for the decomposition of H2O2. H2O2 + I– → H2O + IO– slow H2O2 + IO– → H2O + O2 + I– fast Which of
    15·1 answer
  • What do solids and liquids have in common?
    10·1 answer
  • Determine which elements or compounds are products in the<br> follow reaction equation:
    14·1 answer
  • Help help help !!!!!!
    5·1 answer
  • Calculate the number of moles in 136g of ammonia
    6·1 answer
  • Write the formula two atom of iron and three atoms of oxygen​
    14·1 answer
  • I’ll mark you brainley if you help me figure out which answer it is!!!
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!