Atoms
T or F, hydrogen has many neutrons.
False
Equation for density
d= m/v
T or F, microwaves have wavelengths
True, microwaves do have wavelengths
T or F, An element is not made up of the same kind of atoms.
False, an element is made up of the same kind of atoms.
T or F, goggles shouldn't be worn at all times
False, goggles must be worn at all times
T or F Hydrogen is an atom?
True, Hydrogen is an atom.
Crushing a can is what form of change?
Physical change
T or F, red has the shortest wavelength
False, red has the longest wave length
T or F is sand an element
Sand is a Mixture not an Element
a flat surface with heating elements.
Hot plate
T or F, Atoms are composed of a nucleus.
True, atoms are composed of a nucleus
any substance that has mass and takes up space by having volume
Matter
T or F, As a wavelength increases in size, its frequency and energy decrease
True, As a wavelength increases in size, its frequency and energy decrease
Substances which are formed by two or more different types of elements
Compounds
T or F, horse play is allowed in the lab
False, horse play is not allowed in the lab
Which model explained the description of the inner structure of the atom theoretically?
Thomson atomic model
T or F Physical properties include color, density, hardness
True, Physical properties include color, density, hardness
bright lines will show up corresponding to the difference between energy levels of the elements
Emission spectrum
Is Cereal in Milk a Heterogenous mixture or a Homogeneous mixture
Cereal in Milk is a Heterogenous mixture
They are used for heating, mixing, and stirring.
Test tubes
What are the 3 types of atoms?
protons, electrons and neutrons.
the mass of an object divided by its volume.
Calculated density
Which color has the shortest wavelength?
violet
What mixtures are sources of water, saline solution, some alloys, and bitumen
Homogeneous Mixture
to measure the volume of a liquids, chemicals or solutions
Graduated cylinder