click below
click below
Normal Size Small Size show me how
PS Qtr 1 Test Review
Questions and answers from Chapters 1-4
Question | Answer |
---|---|
Objects that float on water must have a density of: | Less than 1 g/cm3 |
A graduated cylinder is used to measure: | volume in milliliters |
What is the process of liquid on the surface changing to a gas? | evaporation |
What is the formula for density? | D = M / V |
An observation or measurement of an object. | Physical property |
How does temperature affect solubility of a solid in a liquid? | A solid solute usually becomes more soluble as the temperature of the liquid solvent increases. |
The force of attraction between objects | Gravity |
Is mowing the lawn an example of a physical or a chemical change? | Physical change |
What properties are being described about this candle- waxy blue color and no odor? | Physical properties |
The properties that describe how a substance changes into other substances are called | Chemical properties |
The triple beam balance is used to measure | mass in grams |
The state of matter with no definite shape or volume is | gas |
A logical explanation for events that occur in nature is known as a | theory |
The smallest particle of an element is an | atom |
The substance that does the dissolving is called a | solvent |
The substances that gets dissolved is the | solute |
The basic unit of length is the | meter |
An example of a a homogenous mixture is | saltwater solution |
An object's resistance to change in motion that is directly related to an object's mass is known as an object's | inertia |
How do the particles inside a solid move? | Vibrate in place |
The units of mass are | grams |
A substance that contains only one kind of atom is called an | element. |
What is the density of a substance with mass of 300g and volume of 150 mL? | 300g/ 150 mL = 2 g/mL |
Which of the following is NOT matter: air oxygen water electricity | electricity is not matter. It is is energy!. |
A solid solution that is a mixture of two metals is called an | alloy. |
What is the density of water? | 1 g/mL |
A regular repeating arrangement of particles is called a | Crystalline solid |
When substances go directly from the solid phase to the gas phase the phase change is called | sublimation |
What is an atom? | The basic unit of all matter |
Atom is to element as molecule is to | compound. |
The smallest part of a compound is a | molecule. |
A new substance is formed as a result of a | chemical change. |
The change of a liquid to a solid is called | freezing. |
Scientists test their hypothesis in which step of the scientific process? | experiment |
Which of these can be broken down into simpler substances by chemical but not physical means: mixture solid element or compound | compound. |
Solids that lose their shape under certain conditions are | amorphous. |
The change of a substance from a gas to a liquid is called | condensation. |
Why is a variable placed in an experiment? | To determine how one factor can affect something. |
The amount of matter in an object is | Mass. |
A substance that dissolves in water is considered | soluble. |
The units used to measure density are | grams per milliliter or grams per cubic centimeter |
Burning a piece of paper is an example of a | chemical change. |
A liter of water contains how many milliliters | 1000mL. |
When measuring the temperature of water | you can expect to report your answer in degrees |
What happens when salt is dissolved in water? | Particles separate into their molecules and disperse throughout. |
The metric prex milli- means | one thousandth of a base unit. |
Which of these is not truly a pure substance: element atom mixture molecule | mixture. |
When particles in a closed container are heated they | move faster and farther apart. |
The amount of space an object takes up is | Volume. |