It's actually Science but I didn't find it. Word Bank: friction, gravity, equal, motion, balanced, unbalanced, change, changing, direction speed

Forces acting on an object are balanced or unbalanced. Forces acting on an object have strength and act in opposite directions they are . These forces cancel each other, and of the object does not . When the Forces acting on an object are, they do not cancel out another. An unbalanced force on an object results on the object's motion . The object may change its (speed up or slow down), or it may change its . is a force that resists the motion or the tendency toward motion between two objects in contact with each other. is a force that pulls objects toward one another. For example, Earth pulls all objects toward it.

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Forces acting on an object may be balanced or unbalanced. When the forces  acting on an object have equal strength and act in opposite directions, they  are balanced. These forces cancel out one another, and the motion of the  object does not change.  When the forces acting on an object are unbalanced, they do not cancel out  one another. An unbalanced force acting on an object results in the object’s  motion changing. The object may change its speed (speed up or slow down), or it may change its direction.  Friction is a force that resists the motion or the tendency toward motion  between two objects in contact with each other.  Gravity is a force that pulls objects toward one another. For example, Earth  pulls all objects toward it.

Explanation:

icc, international association for cereal chemistry

answer: c. the experiment shows that the red substance experienced a chemical change.

explanation: chemical change is the change in which chemical composition of the substance changes. physical change is the change in which there is no change in chemical composition.

chemical changes are accompanied by following changes:

a) precipitate formation

b) energy is released or absorbed

c) formation of bubbles

d) change in color

as it is given that the red color has disappeared and there is production of gas, it means the red substance has undergone a chemical change.

e