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Bio midterm

A substance made up of only one kind of atom is an element

True

False

A covalent bond formed by the transfer of electron is an ionic bond

True

False

A compound is two or more substances that can be easily separated and have no chemical formula

True

False

Most atoms are not stable in their natural state and tend to combine with other atoms to become more stable

True

False

Protons have a neutral charge

True

False

Which of the following makes up a molecule of water

One atom of hydrogen and two atoms of oxygen

Two atoms of hydrogen and one atom of oxygen

If you see drops of water on a windshield, what property of water are you observing

Adhesion

Cohesion

If you see drops of water on a windshield, what property of water are you observing

Capillary action

Cohesion

When you're drinking with a straw what property of water is this

Adhesion

Capillary action

When salt is dissolved into water , water is the

Solvent

Solute

What is a neutral ph

What is a very acid ph

What is a very basic ph

The substances that are present when a chemical reaction begins are the products

True

False

Endothermic reactions require a source of energy for the chemical reaction to occur

True

False

What is the powerhouse of the cell

Mitochondria

Nucleus

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