Brainliestttme : )

carbon atoms can form single, double, or triple bonds because they have four valence electrons.

true
false

Answer : Yes, the given statement is true.

Explanation :

As we know that the carbon has four valence electrons. The carbon is the only atom which has catenation property.

Catenation : It is a self-linkage of atoms of the same element into a longer chains. It forms covalent bonds with the other carbon atoms and form longer structures.

The covalent bonds are formed by the sharing of electrons.

Carbon atoms can form single, double, or triple bonds.

Single bond : It is a type of chemical bond in which a pair of electrons is shared between the two carbon atoms.  

Double bond : It is a type of chemical bond in which 2 pairs of electrons are shared between the two carbon atoms.  

Triple bond : It is a type of chemical bond in which 3 pairs of electrons are shared between the two carbon atoms.

Hence, the given statement is true.

(newtons first law)

conservation of momentum law states :

momentum before collision = momentum after collision

momentum p (kg-m/s)= mass * velocity

say moving car=1 000 kg, velocity = 10 m/s then p = 1 000*10= 10 000 kg-m/s

say still car = 2 000 kg, velocity = 0 m/s then p = 2 000* 0 = 0 kg-m/s

total momentum prior to collision = 10 000 + 0 = 10 000 kg-m/s

momentum after collision = 10 000 kg-m/s

mass now = 1 000 kg+2 000 kg = 3 000 kg

10 000 = 3 000 kg* velocity m/s

10 000/3 000 = velocity

3.33 m/s = velocity after collision

an impulse is a force applied over time , momentum is exclusive of external forces and a perfect collision is implied