Rate at which a chemical substance tends to undergo a chemical reaction

Give at least two ways to know if a reaction is endothermic or exothermic

Bruce left some butter out in his kitchen. Bright sunlight came in through the window and melted the butter. Heat energy from the sun is called A) conduction. B) convection. C) insulation. D) radiation.

If a scientist knows the relative age of a fossil, he can also know the relative age of the rock where it was found. how long the organism was alive. how it became extinct. the type of climate from which it came.

Other than through sexual reproduction, how can variations in genetic material occur in a population?

How are sea slugs able to make their own food like green algae? A. They turn into algae. B. They turn into green plants. C. They are genetically capable of making chlorophyll. D. They use the chlorophyll they take in from the algae they eat.

A rope experiences three 400 N forces to the left and three different 410 N forces to the right. (A) Will accelerate to the left (B) Will accelerate to the right (C) Will not accelerate

An ionic bond involves the transfer of what? * Olons Protons Electrons Neutrons

During an Experiment a scientist notes that a sample turned red. which kind of data did the scientist record A. average data B. quantitative data C. measured data D. qualitative data

Why is chemistry important for the study of living things

How much does radon cost per gram