STAR Test Review; Ver 3

Completion
Complete each statement.

	1.	Developing a hypothesis and designing an experiment to test it is part of the process of scientific_______________________.	

	2.	Publishing an article in a scientific journal is one way that scientists _________________ their conclusions.

	3.	Density is a measure of how much mass is contained in a given ____________________.

	4.	An estimate is not a guess because an estimate is based on ____________________.

	5.	If you add 4.667 g and 3.2 g, the answer has ____________________ significant figures.

	6.	A repeating pattern in a graph is a(n) ____________________ trend.

	7.	The most important lab safety rule is to always follow your teacher's ___________________ and the textbook directions exactly.

	8.	____________________ means using one or more senses to gather information.

	9.	The study of matter, energy, motion, and forces, and how they interact, is called ____________________.

	10.	A line graph in which the data points yield a straight line is called a ____________________ graph.

	11.	The point where the x-axis and y-axis cross is called the ____________________ of a graph.

	12.	A student increases the volume of a water sample five times to determine if the volume has an effect on the freezing point.  In this experiment, the volume of water is the ____________________ variable.

	13.	Every form of matter has two kinds of properties-physical properties and ____________________ properties.

	14.	Hardness, texture, color, and freezing point are examples of ____________________ properties of matter.

	15.	A compound may be represented by a(n) ____________________, which shows the elements in the compound and the ratio of atoms.

	16.	A(n) ____________________ is a group of two or more atoms that are held together by chemical bonds.

	17.	A(n) ____________________ is a substance formed from two or more elements that are chemically combined in a set ratio.

	18.	Dissolving a spoonful of sugar in tea or coffee is an example of a(n) ____________________ change.

	19.	The tarnishing of metal is an example of a(n) ____________________ change.

	20.	The fact that matter is not created or destroyed in any chemical or physical change is called the ______________________________.

	21.	The burning of a fuel transforms ____________________ energy and releases it as thermal energy and electromagnetic energy.

	22.	____________________ is a measure of the average energy of random motion of particles of matter.

	23.	The three familiar states of matter are solid, ______________, and gas.

	24.	The slow combination of a shiny metal with another substance that produces a dark coating on the metal is called ____________________.

	25.	The energy your body obtains when you eat food originally comes from the ____________________.

	26.	Like matter, ____________________ is never created or destroyed in chemical reactions.

	27.	Salt, sugar, and snow are examples of ____________________ solids.

	28.	Solids that have particles arranged in a regular, repeating pattern are known as ____________________ solids.

	29.	When a substance cools, it loses ____________________ energy to its surroundings.

	30.	The temperature of a substance increases when the ____________________ energy of the substance increases.

	31.	The characteristic temperature at which a pure solid changes to a liquid is its ____________________ point.

	32.	____________________ is a measure of the average energy of motion of the particles of a substance.

	33.	To test Boyle's law, you could change the volume of a gas and measure its ____________________ at constant ____________________.

	34.	The graph of Boyle's law shows that as the volume of a gas at constant temperature is changed, its pressure varies ____________________ with the volume.

	35.	The ____________________ is the very small center core of an atom.

	36.	The property of an element that indicates the number of protons in its atoms is the ____________________.

	37.	Mendeleev discovered that periodic patterns appeared when he arranged the elements in order of increasing ____________________.

	38.	In the 1800s, Dmitri Mendeleev organized the first truly useful ____________________.

	39.	A column of elements in the periodic table is called a group, or ____________________.

	40.	Each element is given a specific _________________________ that usually consists of one or two letters.

	41.	Elements that easily transmit electricity and heat display the property known as ____________________.

	42.	Most metals are in the ____________________ state at room temperature.

	43.	A(n) ____________________ particle is positively charged and consists of two protons and neutrons.

	44.	A(n) _________________________ is a fast-moving electron given off by a nucleus during radioactive decay.

	45.	Chemical bonds form when valence electrons are ____________________ between atoms.

	46.	Nitrate (NO3-), ammonium (NH4+), and carbonate (CO32-) are examples of ____________________ ions.

	47.	When ions having a positive charge form bonds with ions having a negative charge, the charge on the resulting compound is ____________________.

	48.	____________________ changes occur when bonds form between atoms, or when bonds break and new bonds form.

	49.	The presence of a solute makes it harder for solvent molecules to escape when heated, so the boiling point of a solution is ____________________ than that of the pure solvent.

	50.	A(n) ____________________ is a compound that tastes sour and reacts with some metals.

	51.	A(n) ____________________ is a compound that turns litmus blue and is often found in soaps and detergents.

	52.	One reason ____________________ can form so many compounds is that the same number of atoms can be bonded in different arrangements.

	53.	When one carbon atom is bonded with several other carbon atoms in a single line, the structure is described as a(n) ____________________.

	54.	Polymers that are produced in factories instead of by living things are called ____________________ polymers.

	55.	____________________ is a natural composite made of long fibers of cellulose held together by another polymer called lignin.

	56.	The simple carbohydrate that is present in the blood and that circulates throughout the body is ____________________.

	57.	The simplest kind of carbohydrate is a(n) ____________________.

	58.	A reference point is assumed to be ____________________, or not moving.

	59.	When riding a bicycle past a building, you are not moving relative to the ____________________.

	60.	The distance traveled by a moving object per unit of time is called ____________________.

	61.	Speed that does not change is referred to as ____________________ speed.

	62.	The statement that the motion of a hurricane is 20 kilometers per hour in an easterly direction is a description of the hurricane's ____________________.

	63.	Acceleration is the rate of change in ____________________.

	64.	A golf ball ____________________ when either its speed or direction changes.

	65.	The abbreviation of the unit of acceleration (meters per second per second) is ____________________.

	66.	If a ship has an acceleration of 3 kilometers per hour per hour, its speed is expressed in the unit ____________________.

	67.	If two lines appear on the same motion graph, the line with the steeper ____________________ indicates a greater speed.

	68.	A large truck and a small car are moving at the same speed. The truck has greater kinetic energy because its ____________________ is greater.

	69.	If the velocity of an object is doubled, its kinetic energy is multiplied by ____________________.

	70.	A quantity that consists of both a magnitude and a direction is called a(n) ________.

	71.	The overall force on an object after all the forces are added together is called the ____________________ force.

	72.	Unbalanced forces acting on an object produce a change in the object's ____________________.

	73.	Wet pavement is more slippery than dry pavement because the force needed to overcome ____________________ friction is less than the force needed to overcome sliding friction.

	74.	Friction acts in a direction ____________________ to an object's direction of motion.

	75.	The force of gravity between you and Earth is greater than the force of gravity between you and a car because Earth has more ____________________ than the car.

	76.	The metric unit that is most often used to describe weight is the ____________________.

	77.	A measure of an object's ____________________ is a measure of the object's inertia.

	78.	A person traveling in a car that stops suddenly keeps moving forward due to ____________________.

	79.	According to Newton's third law of motion, the strength of a reaction force is ____________________ the strength of the action force.

	80.	If the action force of a bat striking a ball accelerates the ball in one direction, the reaction force accelerates the bat in the ____________________ direction.

	81.	The momentum of an object is in the same ____________________ as its velocity.

	82.	Because the moon travels around Earth, it is a(n) ____________________.

	83.	The force of gravity is responsible for continuously changing the ____________________ in which a satellite moves.

	84.	The pressure resulting from a force of 50 N exerted over an area of 5 m2 is ____________________ Pa.

	85.	Pressure ___________________ as the area over which a force is distributed increases.

	86.	The buoyant force acts in the direction opposite the force of _____________________.

	87.	A block of wood is placed in a jar of water. According to Archimedes' principle, the ____________________ on the block is equal to the weight of the displaced fluid.

	88.	Chocolate syrup sinks in milk because chocolate syrup is more ____________________ than milk.

	89.	An Earth-centered model of the universe is called a(n) _________________________ model.

	90.	____________________ discovered Jupiter's four largest moons.

	91.	The _________________________ consists of the sun, the planets and their moons, and several kinds of smaller objects.

	92.	Nuclear fusion occurs in the ____________________, or center, of the sun.

	93.	Energy is transferred from the sun's core toward the convection zone mainly in the form of ___________________________________.

	94.	The middle layer of the sun's atmosphere is the ____________________.

	95.	Red light has the longest ____________________ of any color of visible light.

	96.	The electromagnetic waves that have the lowest frequencies are called ____________________.

	97.	An object's apparent change in position when viewed from two different places is called ____________________.

	98.	A galaxy that does not have a regular shape is classified as a(n) ____________________ galaxy.

	99.	A(n) ____________________ galaxy has a characteristic pinwheel shape.