Mixtures
A substance is ______?
1. Always an element
2. Always a compound
3. Either an element or a compound
4. A mixture of compounds
3. Either an element or a compound
A(n) _____ is a material made up of two or more substances that can be separated by physical means.
1. Element
2. Compound
3. Molecule
4. Mixture
4. Mixture
According to kinetic theory, all matter is composed of _______.
1. Waves
2. Particles
3. Solid material
4. Plasma
2. Particles
The negative charged particles outside the nucleus of an atom are
1. Extracellular material
2. Electrons
3. Neutrons
4. Quarks
2. Electrons
The _____ is a chart created by scientists to organize the elements according to repeated changes of the properties
1. Mass number
2. Periodic table
3. Isotope
4. Metalloid list
2. Periodic Table
A(n) ______ is a substance in which all the atoms in it are alike
1. Compound
2. Mixture
3. Element
4. Solution
3. Element
A mixture in which particles are so small they cannot be seen with a microscope is a ______.
1. Heterogenous mixture
2. Solution
3. Suspension
4. Element
2. Solution
Which of the following best describes particles in a solid?
1. Molecules slide past each other; sample takes shape of container
2. No attractive forces between particles
3. Fills whatever container it is in
4. Particles tightly packed together
4. Particles tightly packed together
Which of the following atomic particles is electrically neutral?
1. Neutron
2. Proton
3. Electron
4. Positron
1. Neutron
Which of the following best describes the three general groups of elements.
1. Metals, nonmetals, and noble gases
2. Metals, metalloids, and synthetics
3. Solid, liquid, and gas
4. Metals, metalloids, and nonmetals
4. Metals, metalloids, and nonmetals
The proportions of substances in a mixture ______.
1. Are a always the same for each substance
2. Are always equal for each substance in the mixture
3. Can vary among the substances
4. never can be determined accurately
3. Can vary among the substances
______ is the energy an object has due to its motion.
1. Kinetic energy
2. Heat of vaporization
3. Heat of fusion
4. Diffusion
1. Kinetic Energy
Which of the following atomic particles is positvely charged?
1. Neutron
2. Electron
3. Proton
4. Negatron
3. Proton
Which group of elements in the periodic table contains the noble gases?
1. Group 3
2. Group 8
3. Group 13
4. Group 18
4. Group 18
The silvery liquid in thermometers, called mercury is a(n)
1. Compound
2. Element
3. Mixture
4. Solution
2. Element
If using a microscope allows you to see substances in a mixture that mixture is _______.
1. Heterogenous
2. Homogenous
3. A solution
4. Microgenous
1. Heterogenous
The _____ of a substance is the temperature at which solid begins to liquefy.
1. Heat of vaporization
2. Heat of fusion
3. Melting point
4. Boiling point
3. Melting point
The atomic number of an element is its number of
1. Neutrons
2. Isotopes
3. Protons
4. Electrons
3. Protons
Which group of elements in the periodic table is known as the halogens
1. Group 15
2. Group 16
3. Group 17
4. Group 18
3. Group 17
A(n) _______ is a substance in which atoms of two or more elements are combined in a fixed proportion.
1. Synthetic element
2. Compound
3. Mixture
4. Solution
2. Compound
A characteristic of a material that can be observed without changing the identity of the material is a __________.
1. Physical change
2. Physical Property
3. Chemical Property
4. Chemical Change
2. Physical Property
What is the most common state of matter in the universe?
1. Solid
2. Liquid
3. Plasma
4. Gas
3. Plasma
The _____ of an atom is the number of neutrons plus protons
1. Atomic number
2. Nucleus number
3. Mass number
4. Half-life
3. Mass number
What elements are usually gases or brittle solids at room temperature?
1. Metalloids
2. Metals
3. Nonmetals
4. Transition metals
3. Nonmetals
Which of the following is a substance?
1. Milk
2. Water
3. Vinegar
4. Cheese
2. Water
A change of one substance to another is a
1. Chemical change
2. Physical change
3. Physical reaction
4. Chemical property
1. Chemical change
_____ is the ability of a fluid to exert an upward force on an object immersed in it
1. Buoyancy
2. Thermal expansion
3. viscosity
4. Vaporization
1. Buoyancy
The mass of an electron is ______.
1. Negligible
2. the mass of the neutrons plus the mass of the protons
3. Equal to the mass of a proton
4. Equal to the mass of the nucleus
1. Negligible
The elements in group 2 of the periodic table are
1. Alkaline Earth Metals
2. Alkali Metals
3. Rare earth metals
4. Transition elements
1. Alkaline Earth metals
A ______ is a heterogenous mixture that never settles.
1. Solution
2. Suspension
3. Compound
4. Colloid
4. Colloid
A change in size, shape, or state of matter is a _____.
1. Physical property
2. Chemical property
3. Physical change
4. Chemical change
3. Physical change
A fluids resistance to flow is its
1. Density
2. Buoyancy
3. Viscosity
4. Pressure
3. Viscosity
The atomic mass of an element is _______ of that element.
1. The average mass of an atom
2. The number of protons plus the number of neutrons of an atom
3. The number of protons in each atom
4. The number of electrons in each atom
1. The average mass of an atom
______ have both metallic and nonmetallic properties
1. Halogens
2. Metals
3. Metalloids
4. Nonmetals
Which of the following is a colloid?
1. Smoke
2. Oxygen
3. Vinegar
4. Water
1. Smoke
A ______ is a characteristic of a substance that indicates whether it can undergo a certain chemical change.
1. Physical property
2. Physical change
3. chemical property
4. chemical change indicator
3. Chemical property
The SI unit of pressure is
1. Pascal
2. Bernoulli
3. Charles
4. Boyle
1. Pascal
The atomic number of manganese is 25; its mass number is 55 how many neutrons does an atom of manganese have in its nucleus?
1. 25
2. 30
3. 55
4. 80
2. 30
Which of the following is the most abundant metal in Earth's crust
1. Aluminum
2. Cobalt
3. Iron
4. Nickel
1. Aluminum