All categories

3 years ago

Which is a characteristic of atoms?

Chemistry

2 answers:

vivado [14]3 years ago

7 0

They are the smallest units of matter.

laila [671]3 years ago

4 0

The characteristic of atoms is

They are the smallest units of matter

Explanation

Atoms are the smallest constituent units of matter and they have properties of chemical elements.

Atoms can not be broken by any chemical means.

Atoms of an elements combine together to form compound.

In addition atoms consist nucleus of positively charged protons, neutral neutrons with negatively charged electrons.

You might be interested in

Is the tendency of copper to turn green when exposed to air chemical or physical property?

Zielflug [23.3K]

Chemical. The copper atoms form new chemical bonds with atoms in the air.

8 0

2 years ago

The atomic number determines the identity of the atom. True or False?

Dominik [7]

THE CORRDCT ANSWER IS TRUE

7 0

3 years ago

Read 2 more answers

Butane C4H10 (g),(Hf = –125.7), combusts in the presence of oxygen to form CO2 (g) (Delta.Hf = –393.5 kJ/mol), and H2O(g) (Delta

shusha [124]

Answer: The enthalpy of combustion, per mole, of butane is -2657.4 kJ

Explanation:

The balanced chemical reaction is,

$2C_4H_{10}(g)+13O_2(g)\rightarrow 8CO_2(g)+10H_2O(g)$

The expression for enthalpy change is,

$\Delta H=[n\times H_f_{products}]-[n\times H_f_{reactants}]$

Putting the values we get :

$\Delta H=[8\times H_f_{CO_2}+10\times H_f_{H_2O}]-[2\times H_f_{C_4H_{10}+13\times H_f_{O_2}}]$

$\Delta H=[(8\times -393.5)+(10\times -241.82)]-[(2\times -125.7)+(13\times 0)]$

$\Delta H=-5314.8kJ$

2 moles of butane releases heat = 5314.8 kJ

1 mole of butane release heat = $\frac{5314.8}{2}\times 1=2657.4kJ$

Thus enthalpy of combustion per mole of butane is -2657.4 kJ

3 0

2 years ago

Why do airbags fill evenly with gases?

Firdavs [7]

Answer:

The signal from the deceleration sensor ignites the gas-generator mixture by an electrical impulse, creating the high-temperature condition necessary for NaN3 to decompose. The nitrogen gas that is generated then fills the airbag.

basically, the nitrogen fills the bag

8 0

2 years ago

Read 2 more answers

Is a pencil a compound or an element and is a pencil heterogeneous or homogeneous

masya89 [10]

Answer:

Pencil is an element and a heterogeneous mixture

Explanation:

6 0

3 years ago

Read 2 more answers