7th Grade Science

Research Question: Does the type of gasoline put in a car effect how fast the car can drive. What is the independent variable?

• Type of gasoline
• which car the gas is put into
• how fast the car can drive
• how much gas is put into the car

Ms. S set up an experiment to see how the mass of a ball affects the distance it rolls off a ramp. What is the dependent variable?

• Distance traveled by the ball
• Height of the ramp
• Mass of the ball
• Where the experiment took place.

Tags

CCSS.6.EE.C.9

Law of conservation of matter states that

• matter is created

• matter is destroyed

• matter is neither created nor destroyed

• matter does not change

True or false. Law of conservation of matter means that the number of atoms of the products is more than the number of atoms in the reactants.

• True

• False

REACTANTS are always on what side of the chemical equation?

• right
• left
• top
• bottom

Which of the following are PRODUCTS?
H₂O + CO₂ → HCO + HO

• H₂O and CO₂
• HCO and HO
• H₂O ONLY
• HCO ONLY

Which of the following models best demonstrates a balanced chemical equation?

• F
• G
• H
• J

Coal contains carbon and other elements. Carbon dioxide forms when coal burns in the presence of oxygen. Which of these is the best evidence that a chemical reaction occurs when coal burns?

• The shape of the coal changes
• Oxygen is present
• A new substance is produced
• Coal is made up of more than one element

The temperature of water is a characteristic property of water.

• True
• False

Which of the following is a characteristic property?

• volume
• mass
• melting point
• weight