Explanation:
When two or more forces act in opposite directions and are equal then the object does not move as the forces cancel out each other.
This type of force is known as balanced force. Balanced force does not cause change in motion.
Thus, we can conclude that balanced force occurs when all forces acting on an object cancel out, and there is no movement.
B. potassium
C. hydrogen
D. lithium
Answer: C. hydrogen
Explanation:
Atomic radius of an atom is defined as the total distance from the nucleus to the outermost orbital of electron.
On moving from top to bottom, there is an addition of shell around the nucleus and the outermost orbital gets far away from the nucleus and hence, the distance between the nucleus and outermost orbital increases.
This in turn increases the atomic radii of the element from moving top to bottom in a group.
Answer:
it developed in the 1830s and 1840s by Samual Morse and other inventors, the telegraph changed long distance communication.
Explanation:
Using the time period, the ability to use telegraphs on moving trains came to be shortly after.
True or false?
Answer:
true
Explanation:
Answer:the reaction arrow is used most frequently and indicates a reaction occurring from the reactants to the products. The arrow's head points in the direction the reaction proceeds in.
two or more substances combine chemically
two or more substances combine but keep their physical properties
two or more substances combine and create an irreversible reaction
Mixtures are combination of two or more substances which can be separated based on their physical properties. Hence, option c best describes a mixture.
Mixtures are substances formed by the combination of two or more individual components. The mixing can be of physical or chemical type. The individual components can be separated using some techniques based on their physical properties.
There are both homogenous mixtures and heterogenous mixtures. In homogenous mixtures the components are uniformly mixed and form a single phase.
Heterogenous mixtures are composed of components forming different phases. They can be easily separated using simple techniques. Irrespective of the type of mixing, the physical properties of the components are maintained as such in a mixture. Hence, option c is correct.
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Answer: two or more substances combine but keep their physical properties or two or more substances combine and create an irreversible reaction.
Explanation: Because i tried the other two and they didnt work so yeah thats life and i got a d on my test thx for the wrong info person before me.