Physical Changes Affecting The Form Of A Chemical Substance
PHYSICAL SCIENCE physical change-changes affecting the form of a chemical substance,Physical changes are used to separate mixtures into their component compounds
Example:breaking glass
Chemical changes- when a substance combines with another to form a new substance ,called chemical synthesis.
Example: burning wood
Law of Conservation of Mass-The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.
Example: If you massed the reactants oxygen and wax, it would equal the mass of the products water and carbon dioxide. …show more content…
If any part of a meteoroid survives the fall through the atmosphere and lands on Earth, it is called a meteorite.
Why do we get seasons-because the earth is tilted
Why do we get night and day-The Earth takes 24 hours to make one complete turn. We have day and night because the Earth rotates.
What is a solstice-either of the two times in the year, the summer solstice and the winter solstice, when the sun reaches its highest or lowest point in the sky at noon, marked by the longest and shortest days
What is an equinox-the time or date (twice each year) at which the sun crosses the celestial equator, when day and night are of equal length (about September 22 and March 20).
20. What is the difference between a Spring tide and a Neap tide? What phase is the moon in for each one-The difference in height between high and low waters varies as the moon waxes and wanes from new to full and back to new again. The larger tides are called spring tides (nothing to do with season of spring). The smaller tides are called neap tides. Click the links below to learn more about the
Example:breaking glass
Chemical changes- when a substance combines with another to form a new substance ,called chemical synthesis.
Example: burning wood
Law of Conservation of Mass-The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.
Example: If you massed the reactants oxygen and wax, it would equal the mass of the products water and carbon dioxide. …show more content…
If any part of a meteoroid survives the fall through the atmosphere and lands on Earth, it is called a meteorite.
Why do we get seasons-because the earth is tilted
Why do we get night and day-The Earth takes 24 hours to make one complete turn. We have day and night because the Earth rotates.
What is a solstice-either of the two times in the year, the summer solstice and the winter solstice, when the sun reaches its highest or lowest point in the sky at noon, marked by the longest and shortest days
What is an equinox-the time or date (twice each year) at which the sun crosses the celestial equator, when day and night are of equal length (about September 22 and March 20).
20. What is the difference between a Spring tide and a Neap tide? What phase is the moon in for each one-The difference in height between high and low waters varies as the moon waxes and wanes from new to full and back to new again. The larger tides are called spring tides (nothing to do with season of spring). The smaller tides are called neap tides. Click the links below to learn more about the