Which unit is used to measure weight?
A. inch
B. Pound
C. Milliliter
D. Centimeter
B. pound
100
At room temperature most elements are
A. solid
B. liquid
C. gas
D. conductive
A. solid
100
Which type of particle inside an atom has one unit of negative electrical charge?
A. proton
B. neutron
C. electron
D. nucleus
C. electron
100
The most common elements in the universe are
A. sodium and oxygen
B. aluminum and nitrogen
C. carbon and calcium
D. hydrogen and helium
D. hydrogen and helium
100
what happens to metals when they combine with nonmetals from the environment?
A. they become corroded
B. they melt
C. they turn to a gas
D. they explode
A. they become corroded
200
The measure of how much space an object takes up is _______.
Volume
200
Anything that has mass and volume is made up of ______.
Matter
200
The amount of mass for each milliliter of a substance is known as the __________ of the substance.
Density
200
A material that cannot be broken down into anything simpler by using chemical reactions is a(n) _________.
Element
200
A group of elements known as ________ on the periodic table have conductivity, luster, and flexibility as common properties.
Metals
300
The smallest unit of an element that retains the properties of that element is a(n) _______.
Atom
300
The hard core of an atom is the ________.
Nucleus
300
Bending or shaping a material without breaking is __________.
Malleability
300
A)n) ____________ consists of two or more atoms joined together as a single particle.
Molecule
300
The ability to make a material thin or wire-like without breaking it is ___________.
Ductility
400
Bowl A has 30 marbles in it. Bowl B has 8 marbles in it. If both bowls are the same size, which one has a higher density?
Bowl A.
400
What formula is used to find the density of an object?
Density = Mass / Volume
400
Describe a proton: include weight, charge, and location in an atom.
1 amu, positive charge, found in nucleus
400
Describe a neutron: include weight, charge, and location in an atom.
1 amu, 0 charge (neutral), found in nucleus.
400
Describe an electron: include weight, charge, and location in an atom.
0 amu, -1 charge, moves around the outside part of the atom
500
What are 2 ways we use aluminum today?
pop cans, boat lifts, car parts, some buildings, food packaging, aluminum foil, kitchen utensils, airplane parts
500
Why is aluminum used in so many products?
It is strong, lightweight, and very malleable so it can be made into many different products.
500
What is buoyancy and give an example of an object that is buoyant.
resistance to sinking. A boat, canoe, log, styrofoam
500
What makes some objects buoyant? (hint: why do some things float while others do not?)
objects that float have a density lower than that of water (water's density is 1). objects that sink have a higher density.
500
What would you do to measure the volume of an odd-shaped object such as a baseball?
fill a graduated cylinder with water, measure the initial volume, then add the baseball and re-measure the volume. Subtract initial volume from final volume to get the volume of the baseball.