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Science
Health
Science
Health
Science
100
Ninety- eight percent of the Earth's crust is made up of _____ natural elements. A. ten B. eight C. six D. four
eight
100
How does the word support differ from the word neglect?
Support and neglect are opposites. Supporting people helps them. Neglecting people hurts them.
100
atomic mass unit (amu) a. the number of protons and neutrons in an atom b. the sum of an atom's protons and neutrons; the best way to label atoms since they are too small to weight in grams c. a mixture where substances with the same make up and properties are uniformly blended throughout the mixture d. what you use instead of grams when writing the mass of protons and neutrons
what you use instead of grams when writing the mass of protons and neutrons
100
How can clothing help prevent skin cancer?
protects your skin from harmful rays of the sun
100
Neutrons are sub-atomic particles _____. a. which orbit the nucleus of the atom b. with a positive charge c. that make up most of the volume of atoms, d. found in the nucleus of atoms e. with a negative charge
found in the nucleus of atoms
200
An atom's atomic mass is the sum of its _____. A. electrons and neutrons B. protons and neutrons C. protons and ions D. electrons and protons
protons and neutrons
200
The color of human skin is mainly determined by a brown pigment called _____.
Melanin
200
molecule: a. the smallest unit of matter that can stand alone and keep all of a substance's chemical properties b. the attraction that is formed between two oppositely charged ions which happen when electrons are transferred from one atom to another c. the fast moving electrons that swim around the nucleus of an atom d. the characteristics that tell you how substances react when put together with other substances
the smallest unit of matter that can stand alone and kepp all of a substance's chemical properties
200
small insects live on the scalp and suck blood and also a common hair problem
Head Lice
200
The number of ______ in the nucleus of the atom is equal to the atomic number. a. isotopes b. valence electrons c. neutrons d. ions e. protons
protons
300
subatomic particle: A. the weighted averages of the masses of an element's isotopes (naturally occurring isotopes of course) B. the tinier parts of an atom; protons, neutrons, and electrons C. natural and human-made substances that cannot be broken down into simpler substances through chemical reactions D. classifying chart for natural and human-made elements
the tinier parts of an atom, protons, neutrons, and electrons
300
A condition in whcin people hear a persistent ringing, buzzing, clicking, or roaring even though no external source for the sound is present.
Tinnitus
300
element a. natural and human-made substances that cannot be broken down into simpler substances through chemical reactions b. the weighted averages of the masses of an element's isotopes (naturally occurring isotopes of course) c. the natural glue that holds atoms in molecules together d. the attraction that is formed between two oppositely charged ions which happen when electrons are transferred from one atom to another
natural and human- made substances that cannot be broken down into simpler substances through chemical reactions
300
A thin flap of skin around the nail
cuticle
300
An electrical attraction between two oppositely charged atoms or groups of atoms is referred to as a(n) _____. a. solution b. covalent bond c. mixture d. ionic bond
ionic bond
400
Isotope: a. a mixture where substances with the same make up and properties are uniformly blended throughout the mixture b. the attraction that is formed between atoms that share electrons c. atom of an element with the same number of protons but a different number of neutrons as the other atoms d. the number of protons and neutrons in an atom
atom of an element with the same number of protons but a different number of neutrons as the other atoms
400
The outer layer of your skin is called _____.
Epidermis
400
Solutions are classsified as _____ mixtures because two or more substances are uniformly mixed throughout the mixture. a. fibrous b. homogeneous c. hetergeneous d. gelatinous
homogeous
400
A hole in a tooth that is made by acids
Cavity
400
The needle of a compass points toward the _____. a. geographic North Pole b. geomagnetic North Pole c. either A or B d. neither A nor B
geomagnetic North Pole
500
atomic number a. just like math, it the chemical equations that have the same amount of atoms in each element on the left side as it does in that same element on the right side b. the number of protons in an atom's nucleus c. anything that takes up space and has mass d. the neutrally- charged subatomic particle
the number of protons in an atom's nucleus
500
An inflammation of the skin that happens when pores become clogged with dirt and oil
Acne
500
The periodic table arranges elements according to _____. a. their atomic mass b. their atomic number c. the letters of the element's d. when the element was discovered
their atomic number
500
A mixture of bacteria, saliva, and food particles
plaque
500
If you want to determine the meaning of symbols on a map, you study the _____. a. contour interval b. map legend c. map scale d. compass rose
map legend