Properties of Matter
This occurs when liquid water changes into water vapor.
What is evaporation?
This type of bond forms when atoms share electrons.
What is a covalent bond?
A soccer ball stays still on the field until a player kicks it. This law says an object at rest stays at rest unless acted on by an unbalanced force.
What is Newton’s First Law of Motion?
A car travels 100 miles in 2 hours. Its average speed is this.
What is 50 miles per hour?
In a chemical equation, the substances on the left side of the arrow are called these.
What are reactants?
This occurs when water vapor cools and becomes liquid water droplets.
What is condensation?
This type of bond forms when electrons are transferred from one atom to another.
What is an ionic bond?
A swimmer pushes water backward, and the water pushes the swimmer forward. This law states that every action has an equal and opposite reaction.
What is Newton’s Third Law of Motion?
A student walks 60 meters in 12 seconds. The student’s speed is this.
What is 5 m/s?
In a chemical equation, the substances on the right side of the arrow are called these.
What are products?
This change occurs when a solid turns directly into a gas without first becoming liquid. Dry ice is an example.
What is sublimation?
This type of bonding occurs between metal atoms, whose electrons move freely through the material.
What is a metallic bond?
A shopping cart moves faster when a person pushes harder. This law explains the relationship between force, mass, and acceleration.
What is Newton’s Second Law of Motion?
An object changes speed from 4 m/s to 16 m/s in 4 seconds. Its acceleration is this.
What is 3 m/s²?
To balance an equation, you may change these numbers in front of chemical formulas, but you should never change subscripts.
What are coefficients?
he substance that does the dissolving, such as water in salt water.
What is a solvent?
Sodium transfers an electron to chlorine to make sodium chloride, NaCl. This bond is an example of this type.
What is an ionic bond?
When wood burns, the ash, smoke, gases, and remaining material have the same total mass as the original wood and oxygen together. This law explains why matter is not created or destroyed.
What is the law of conservation of matter or law of conservation of mass?
A 6 kg box accelerates at 5 m/s². The force on the box is this.
What is 30 newtons?
Balance this chemical equation:
H2 + O2 → H2O
2H2 + O2 → 2H2O
Matter with a fixed shape and a fixed volume.
What is a solid?
In water, H2O, hydrogen and oxygen share electrons. This bond is an example of this type.
What is a covalent bond?
This force pulls a dropped pencil toward Earth and keeps the Moon moving around Earth.
What is gravitational force or gravity?
A worker uses 100 N of force to push a box 8 meters. The work done is this.
What is 800 joules?
Balance this chemical equation:
Fe + O2 → Fe2O3
4Fe + 3O2 → 2Fe2O3