Cumulative Review - Chapters 1- 5 (20 Questions)

A burning match undergoes a chemical change. In a chemical change, the composition of the matter is altered, resulting in the formation of new substances. When a match burns, the reactants (the matchstick and oxygen from the air) undergo a chemical reaction, which produces new substances such as carbon dioxide, water vapor, and ash. This change is not reversible, and the properties of the original substances are permanently altered. Therefore, a burning match is an example of a chemical change.

Electrons are the subatomic particles that orbit in energy levels around the nucleus and have negative charges in an atom.

Two or more substances that are mixed together but not chemically combined are called a mixture. In a mixture, the substances retain their individual properties and can be separated by physical means. This is different from a compound, where two or more elements are chemically combined to form a new substance with different properties.

The precise measurement on the triple beam balance is 79.3 g.

Exo- means releasing or going out.

The amount of space that matter, the liquid, takes up in a graduated cylinder is referred to as its volume. Volume is a measure of the three-dimensional space occupied by an object or substance. In the context of a graduated cylinder, volume is typically measured in milliliters (mL) or cubic centimeters (cm³).

The correct answer is that chicken and feathers weigh the same. This is because both a kilogram of chicken and a kilogram of feathers have the same weight, which is one kilogram. The question is a play on words, as it tricks the reader into thinking that the feathers would weigh less due to their lighter and fluffier nature compared to the solid mass of the chicken. However, weight is determined by the mass of an object, and in this case, both the chicken and the feathers have the same mass of one kilogram.

An endothermic reaction is a chemical reaction that absorbs energy in the form of heat from its surroundings. When an ice pack absorbs energy, it takes in heat from its surroundings, resulting in a drop in temperature. This is an example of an endothermic reaction because the ice pack is absorbing energy (heat) from its surroundings.

Newton is the correct answer because he is credited with formulating the concept of gravity when an apple fell off a tree. This event is said to have inspired Newton to develop his theory of universal gravitation, which states that every object in the universe attracts every other object with a force that is directly proportional to their masses and inversely proportional to the square of the distance between them. Newton's work on gravity revolutionized our understanding of the physical world and laid the foundation for modern physics.

Weight must have gravity to stay the same, but mass is the amount of matter in the object, which does not depend upon gravity.

The boiling point of a liquid in the metric measurement is 100 degrees Celsius.

Freezing point is the temperature at which a substance changes from a liquid to a solid state. In the metric system, the freezing point of water is 0 degrees Celsius. Therefore, when it is freezing outside, the temperature would be 0 degrees Celsius.

Harry is not practicing the safety rule of rolling up his long sleeves to avoid catching them on fire or dipping them into chemicals.

The melting of a snowman is a physical change because it involves a change in the physical state of matter from solid to liquid, without any change in the chemical composition of the snowman's materials.

Malleable is the term used to describe materials that can be pounded or rolled into a shape. This means that the material can be easily deformed under compression without breaking or cracking. Malleable materials have the ability to change their shape without losing their strength or integrity.

Remember it says the "First Person". Dalton was the known ash "The Father of the Atomic Model".

The correct answer is 4.9 cm because the question asks for the measurement on the meter stick at the letter F. The other options (5.0 in., 4.9 in., 4.9 mL) are not relevant to the meter stick measurement. The given answer matches the unit of measurement specified in the question (cm) and is the closest measurement to the letter F on the meter stick.

Dalton also experiment with the atom and Democritus did not.

The measurement on the graduated cylinder is 53 mL.

Plasma is the state of matter where atoms are stripped of their electrons and the nuclei are packed very close together. It is found in lightning, shooting stars, and the sun, where there is a great amount of energy.