Scientific Tools
What tool would you use to measure the temperature of water?
Celsius thermometer
What are the three main physical states of matter?
Solid, liquid, and gas
What is a mixture?
A mixture is two or more substances combined together without becoming a new substance.
What does it mean when matter is conserved?
Matter is not created or destroyed when substances are mixed. Or keep from going away.
What tool would you use to measure the mass of an object?
Digital scale or balance
An object is attracted to a magnet. What physical property is being observed?
Magnetism.
Is salt water a mixture or a solution? Explain.
Salt water is an solution because the salt cannot be easily removed from the water.
If you mix 65 g of soil with 173 g of water, what should the total mass be?
238g
You want to measure exactly 25 mL of water. What tool should you use?
Graduated cylinder
A rock sinks in water while a piece of wood floats. What physical property are you comparing?
Relative density
Which mixture can be separated only by evaporating the liquid?
Sugar water
A student mixes oil and water. The oil is still present even though it mixes differently from the water. What does this demonstrate?
It demonstrates that matter is conserved. The substances are still present even though they may look different after mixing.
Name three different tools you could use to measure the length, mass, and volume of an object or substance.
Ruler, Digital scale/balance , and a Celsius thermometer.
A mystery object has a mass of 200 g, is attracted to a magnet, and sinks in water. Name three physical properties that describe the object.
Mass of 200 g, Magnetism attracted to a magnet, Relative density so it sinks in water.
Two identical beakers each contain 100 grams of water at different temperatures. Beaker A is 40°F (cold) and Beaker B is 110°F (hot). If you add exactly 10 grams of sugar to both and stir them at the exact same speed, what will happen?
The sugar in Beaker B will dissolve faster because higher temperatures increase solubility.
A student mixes 75 g of soil with 125 g of water. After mixing, the total mass is 200 g. What scientific idea does this demonstrate?
Matter is conserved. The total mass before mixing is 200 g, and the total mass after mixing is still 200 g.