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All elements are composed of extremely small particles called ___________.


The measurement of the force of gravity on an object is the object's___________.

pure substances

Table sugar and table salt are examples of ______________________.

electrmagnetic energy

Radio waves, visible light from the sun, infrared "rays" from heat lamps, the waves that heat food in a microwave oven, ultraviolet rays, and X-rays are all considered types of _______________________.

kinetic energy

The energy of motion is called ________.

burning wood

One example of a chemical change is _____________________.

dissolving salt in water

One example of a physical change is ___________________________.


Soil, salad, and sugar water are all examples of ___________.


H2O. CO2, and C12H22O11 are all examples of chemical ____________.

all are different states of matter

How do liquid water, ice, and water vapor differ from each other?

exothermic change

Fireworks exploding in the sky and giving off light are an example of an ______________.

chemical bond

What holds atoms together in a molecule?

endothermic change

The change in which ice absorbs energy and melts is a(n)_______________________.


Anything that has mass and takes up space is called __________.


The ability to do work or cause change describes ________.

chemical energy

During photosynthesis, plants transform electrmagnetic energy from the sun into ____________________.

making models

When scientists create a representation of a complex process, the are________________________.


When scientists put things into categories or group together items that are alike in some way, they are ____________.


Making a foecast of what will happen in the future based on past experience or evidence is called _______________.


Explaining or interpreting the things you observe based on reasoning from what you already know is called________________.

quantitative observations

Observations that deal with a number or amount are called _______________

qualitative observations

Observations that deal with descriptions that cannot be expressed in numbers are called ____________________.


Using one or more of your senses to gather information is called ____________.

scientific literacy

Being able to identify good sources of scientific information and apply the knowledge to problems in your life is part of having_____________.

scientific law

A statement that describes what scientists expect to happen every time under a particular set of conditions is a _______________.


A summary of what you have learned from a scientific experiment is called a _____________.

dependent variable

In a scientific experiment, the responding variable can also be called the _____________.

data table

An organized way to collect and record scientific observation is with a ________________.

responding variable

The factor that may change in response to the manipulated variable is called the __________.


In science, a hypothesis must be _________.


A possible explanation for a set of observations or possible answer to a scientific question is called a ______________.

physical science

Which branch of science includes the study of magnetism?

life science

Which branch of science includes the study of plants, animals, and the human body?

earth and space science

Which branch of science includes the study of the stars?

can spread apart

The particles of a gas---a.) are packed very closely, b.) do not move, c.) or can spread far apart

a fixed volume

A liquid has---a.) a rigid shape, b.) a fixed volume, c.) neither a rigid shape nor fixed volume, or d.)both a rigid shape and fixed volume.


A kind of matter that keeps its shape and volume is a ____________.

flows quickly

A liquid with low viscosity---a.) has a definite shape, b.) flows quickly, c.)flows slowly, or d.)fills its container.

pressure increases

As the fas in a rigid container is heated, it--- a.)pressure increases, b.)volume increases, c.)pressure decreases, or d.)volume decreases.

forms droplets

Because of surface tension, a liquid---a.)resists flowing, b.)forms a crystalline solid, c.)takes the shape of its container, or d.)forms droplets.


A substance that takes the shape and volume of its container is a _______.


The change from a gas to a liquid is called __________.

how variables are related

A graph is a diagram that shows _______________________________.


According to Boyles law, as the volume of a gas is made smaller, the pressure of the gas __________.


As the temperature of a gas in a rigid container gets higher, its pressure __________.

hard and often

At high pressure, gas particles push against the wall of the container---a.)hard and often, b.)very gently, c.)rarely, d.)never

puddle drying up

Which is an example of vaporization---a.(puddle drying up, b.)ice cream cone dripping, c.)drops of dew on grass


When the particles of a gas lose thermal energy, they move---a.)faster, b.)slower, c.)at the same speed, d.)they stop


Making ice cubes from liquid water is an example of ____________.

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