Sound moves at different speeds through different materials. What type of material will sound move the fastest through?
Solid
When two objects reach the same temperature, they are in ____________?
Thermal equilibrium
Solids, liquids, and gases are three states of matter. Which state of matter includes particles that hold a fixed volume, but not a fixed shape?
Liquid
Elements in the periodic table are grouped into columns and rows. What is the name given to columns in the periodic table?
Groups
What type of substance is always made up of a single type of atom?
Element
Petra is measuring sound waves as they travel through different materials. Which of the following will Petra find to be true about sound waves?
A. they travel the fastest through solids
B. They travel the fastest in very dense solids
C. They travel move slowly in solids than in liquids
D. They will speed up as they travel from a solid to the air
They travel the fastest in very dense solids
What is the direction of heat flow?
Hot to cold
What term is used to describe how much mass is packed into a given space?
Density
The periodic table is used to organize the elements based on the similarity of their properties. Sulfur (S) is in a column next to fluorine (F). Which different explains why sulfur and fluorine are grouped in different columns?
A. sizes
B. properties
C. atomic masses
D. atomic numbers
properties
According to atomic theory, elements are made up of small units. What is the name for the smallest unit of an element that can still be classified as that element?
Atom
The diagram demonstrates how a magnifying lens can make a penny appear larger. What property of the magnifying lens is most responsible for allowing it to magnify the penny?
Refraction
You and your friend are pushing a bin of books in the same direction. You are pushing with a force of 10 N and your friend is pushing with a force of 15 N. What is the net force applied on the bin?
25 N
Marcie wanted to find the density of a silver bracelet She found that its mass was 21 grams and its volume was 2 cm cubed. What was the density of the silver bracelet?
10.5 grams/ centimeters cubed
Elements in the periodic table are grouped into columns and rows. What is the name given to columns in the periodic table?
A. Clusters
B. Groups
C. Periods
D. Stages
Groups
A substance contains an arrangement of different types of atoms joined together by chemical bonds. This statement best describes which of the following classes of substances?
Compounds
The medium through which a mechanical wave passes can be a solid, a liquid, or a gas. Properties of a wave might change when it moves from one medium to another. What happens to the speed of a wave when it moves from a gas to a solid?
A. It speeds up
B. It slow down
C. It remains the same
D. It speeds up and then slows down
If an object is moving at a constant speed, and a force pushes it in the same direction, the object will
Accelerate
Matthew has six cubes of different materials. Each cube has a mass of 10 grams (g). Matthew sorts the cubes into two groups using one physical property. Which physical property did Matthew most likely use to sort the cubes into two groups?
A. Density
B. Electrical conductivity
C. Magnetism
D. Melting point
Electrical conductivity
Mario discovered that sodium (Na) is found in Group 1, Period 3 on the periodic table. Where should Mario look for another element that has similar properties?
A. In Group 1
B. In Period 3
C. On the opposite side of the periodic table
D. For any other element that begins with the letter N
In Group 1
Carbon monoxide detectors protect people from being poisoned by carbon monoxide gas. A molecule of carbon monoxide is made up of one carbon atom and one oxygen atom. Which of the following best describes the properties of carbon monoxide?
A. It has half of the properties of carbon and half of the properties of oxygen.
B. It has mostly the properties of oxygen and a few properties of carbon
C. It has a unique set of properties that are different from carbon and oxygen
D. It has the same properties as all other gases that are made of carbon and oxygen
It has a unique set of properties that are different from carbon and oxygen
Sunlight is composed of energy that is visible to humans and energy that is not visible to humans. Which statement describes how the visible energy from the Sun is different from the nonvisible energy?
A. It travels at a different speed through space
B. It travels at a different distance through space
C. It has different wavelengths
D. It has different amplitudes
Mrs. Aldaco added a room- temperature copper (Cu) cube and an aluminum (Al) cube that she just removed from the freezer to a beaker of boiling water. She left the cubes in the water for three hours. Which of the following describes a heat flow that took place during those three hours?
A. from the aluminum cube to the beaker
B. from the copper cube to the boiling water
C. from the aluminum cube to the copper cube
D. from the boiling water to the aluminum cube
From the boiling water to the aluminum cube
Erin makes a sugar solution by adding 1 teaspoon of sugar at a time to 100 mL of water until no more sugar dissolves. Then she makes a salt solution by adding 1 teaspoon of salt at a time to 100 mL of water until no more salt dissolves. She observes that she addes fewer teaspoons of salt before it stops dissolving. What does she conclude about the solubility of sugar and salt in water?
A. They have no solubility
B. They have the same solubility
C. Salt has a higher solubility than sugar
D. Sugar has a higher solubility than salt
Sugar has a higher solubility than salt
Lithium (Li), Sodium (Na), Potassium (K), Rubidium (Rb), Cesium (Cs), and Francium (Fr) are in the same column on the periodic table. Why are these elements in the same column in the periodic table?
A. They have similar properties
B. They have atoms of the same size
C. Thye have the same number of protons
D. They have the same number of neutrons
They have similar properties
Look closely at the illustration below showing where the compound sodium hydroxide falls on the pH scale. What type of compound is sodium hydroxide?
Base