TEST REVIEWER

Multiple Choice

The astronaut floats in international space station. It proves that...

• His weight is less in space

• His weight does not change

• His mass is less in space

• His mass is more in space

Multiple Choice

The table shows the pH of several solutions. Which solution is the most acidic?

• vinegar

• milk

• water

• bleach

Multiple Choice

Acid react with base to form salt and _____

• oxygen gas

• carbon dioxide gas

• water

• salt

Multiple Choice

Sincere has several substances on a lab bench including sugar, pebbles, cooking oil and flour. If he wants to produce a solution using water, which substance should he add to his beaker of water?

• sugar

• pebbles

• cooking oil

• flour

Multiple Choice

TRUE or FALSE.

Elements which belong to the SAME GROUP/FAMILY will likely have SIMILAR PROPERTIES.

• TRUE

• FALSE

Multiple Choice

What are the TWO PRODUCTS OF PHOTOSYNTHESIS?

• Carbon dioxide and water

• Oxygen and Sugars (Glucose)

• Sunlight and Carbon dioxide

• Oxygen and Carbon dioxide

Multiple Choice

Which of the following is NOT a compound?

• $$CO_2$$  

• $$H_2O$$  

• $$Ar$$  

• $$C_6H_{12}O_6$$  

Multiple Choice

Which illustrates a mixture?

Multiple Choice

The following equation illustrates the chemical reaction that occurs in a plant.

Water + carbon dioxide + light energy to sugar + oxygen.

Based on the law of conservation of energy, what happened to the light energy in the reaction?

• It was changed into oxygen gas

• It was produced by the plant

• It was converted into chemical energy stored in sugar

• it was destroyed

Multiple Choice

Drew added yeast and sugar to lukewarm water and placed it in a flask. He stretched a balloon over the opening of the flask. After several minutes, he noticed small bubbles rising along the side of the flask as the balloon slowly began to inflate. How should the mass of the balloon/flask complex after the reaction relate to the mass of the balloon/flask complex before the reaction?

• The mass should be the same since matter is neither created nor destroyed.

• The mass of the flask/balloon complex after the reaction should be less since a gas was created.

• The mass of the flask/balloon complex after the reaction would weigh more since something new was created.

• The mass of the flask/balloon complex after the reaction should be less because the reactants are used up during the chemical reaction.

Multiple Choice

According to the Law of Conservation of energy, the amount of energy before and after a reaction must be the same. Which statement below is true?

• The total amount of energy is conserved

• The total amount of energy is less after a reaction

• The total amount of energy is more after a reaction

Match

Match the following about the 3 SUBATOMIC PARTICLES

• Proton

• Electron

• Neutron

Positively charged particle

Negatively charged particle

No charged particle

• Positively charged particle

• Negatively charged particle

• No charged particle

Multiple Choice

When mixing milk and vinegar, a white, chunky, a new solid substance is formed. What has occurred?

• Physical change: state of matter

• Chemical change: precipitate

• Physical change: freezing

• Chemical change: new gas

Multiple Choice

In which state of matter are the particles the moving the fastest?

• solid

• liquid

• gas

Multiple Choice

Which CYCLE best illustrates the image on the side?

• Nitrogen cycle

• Carbon cycle

• Oxygen cycle

• Hydrogen cycle

Multiple Choice

Which cell organelle does CELLULAR RESPIRATION occur?

• mitochondria

• chloroplast