That's Tiny
In an atom, there are particles with charges. What type of charge does a proton have?
positive electrical charge
Every element in the world is organized in a large table. What is this large table called?
the periodic table of elements
One property that we can use to describe an element is volume. What is volume?
the amount of space that an object takes up
What are the three states of matter? How do particles behave during each state?
solid - particles are tightly packed and don't move
liquid - particles are loosely packed and take the shape of their container
gas - particles are far apart and have no definite shape
In an atom, there are particles with charges. What type of charge does an electron have?
negative electrical charge
Elements can be combined, forming a different type of matter. Water (H2O) is an example of a combination of elements. What do we call a combination of elements?
compound
One property we can use to describe an element is mass. What is mass? How is mass different than weight?
Mass is the amount of matter in an object. Mass will never change, but weight changes depending on the pull of gravity.
What word is used to describe the ability of an object to float?
buoyancy
In an atom, there are particles with charges. What type of charge does a neutron have?
no charge, or a neutral charge
Chemical formulas tell us how many atoms of elements are in every compound. Using the chemical formula CO2 and your periodic table, list the 2 elements found in CO2 and how many atoms there are of each element.
1 carbon and 2 oxygen
One property that we can use to describe an element is density. What is density?
the amount of matter in a volume
What do we call the temperature that a liquid needs to become a solid? To become a gas?
freezing point
boiling point
Each element is made up of tiny particles, which are called what? These are so small that even a microscope might not be able to see them.
atoms
One way to organize elements is by the number of protons the element has in its atoms. How many protons are in each atom of gold?
79 protons
The density of water is 1.0. The density of blood is 1.06. If a drop of blood spills onto water, will the blood float or sink?
The blood will sink. If the density of any substance is HIGHER than the density of a different substance, it will sink.
When different materials are placed together but they do not bond to form a new compound, what is it called? Steel is an example of this.
a mixture
(steel is mixture of iron and carbon)
The basic building block of matter is called what? This cannot be broken down into smaller pieces.
elements
An element can be described using physical properties. What are the 5 main physical properties used to describe an element?
mass, volume, color, odor, and phase (solid, liquid, or gas)
One iron box has a density of about 7.8 grams per centimeter. What is the density of ten iron boxes?
7.8 grams per centimeter
You have a sheet of copper. You have bent it, crumpled it, ripped it, and even poked holes in it. What has happened to the properties of the copper?