Test 11 - Chapter 1-6
暂无描述。系统推荐的高质量记忆内容，适合每天坚持背诵学习。
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What planet was discovered by the Herschels
Uranus
Which planet is the speediest?
Mercury
Which planet is best known for its rings?
Saturn
Which planet is often called the morning star?
Venus
Which planet’s largest moon is Ganymede?
Jupiter
A tiny group of two or more atoms that are bonded tightly together
molecule
The amount of matter in one unit of volume
density
A substance composed of only one atom
element
Anything that takes up space and has mass
matter
Substances that are composed of more than one type of atom bonded together
compounds
A measure of the put of gravity on an object
weight
the chemical reaction that occurs when a substance reacts rapidly with oxygen
combustion
the amount of matter that makes up an object
mass
formed by electrons that are in orbit at about the same distance from the nucleus
shell
the metric unit used to measure an object’s mass
gram
lacking an electrical charge
neutral
the tiny particles that all matter is composed of
atoms
negative particles found in an atom
electrons
the name given to the number of protons in an element
atomic number
positive particles found in the nucleus
protons
The man known as the “Father of Modern Rocketry”
Robert Goddard
The first man to set foot on the moon
Neil Armstrong
The first American to orbit the earth
John Glenn
The man who discovered that white light is a combination of many colors
Sir Isaac Newton